April 20, 2025

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Best compact binoculars 2024: Lightweight, travel-friendly models

25 min read
Best compact binoculars 2024: Light, travel-friendly models  Space.com

Best compact binoculars 2024: Jump Menu

If you’re in the market for a pair of the best compact binoculars, you’ve come to the right place. We’ve rounded up the very best of them here, covering a wide range of specifications and price ranges.

Why choose compact binoculars instead of a standard set? Well, there’s usually one very simple reason: Portability. Some binoculars can be huge compared to compact binoculars, making these smaller offerings great for traveling, keeping in your pocket and generally moving around with.

They’re also lighter, making them a great choice for taking on a day trip or packing in a back when going on vacation. And size doesn’t always need to mean sacrifices: lots of the best compact binoculars offer exceptional optical quality, and we’ve made sure to only select those we’d personally recommend on this list.

Our expert reviewers have tried and tested these binoculars out in the field, considering factors like weatherproofing, size, weight and price when they give their rating. There are some great budget options in this guide, or you can check out our binoculars deals page for deals on some of the best binoculars and best binoculars for kids

If your interests are more niche, you might want to look at our guide to the best night vision binoculars and best rangefinder binoculars, both great for wildlife watching and nighttime photography. If you’re more into stargazing, check out our guides to the best telescopes and best telescopes for deep space.

Jason Parnell-Brookes
Jase Parnell-Brookes

The quick list

Best compact binoculars we recommend in 2024

Best overall

Best overall: You’ll get the best viewing experience from these well-built binos and their big objective lenses

Specifications

Magnification: 8x

Objective lens diameter: 25mm

Angular field of view: 6.2-degrees

Optical design: Roof prism

Glass: FMC + phase coating, BaK-4

Eye relief: 15mm

Weight: 9.17 oz (260g)

Reasons to buy

+

Waterproof, fogproof, dirtproof

+

Nitrogen filled

+

Close focus 1.5 m

+

Large 25 mm objectives

Reasons to avoid

Premium price

Focusing could be smoother

Buy it if

βœ… You’re a keen wildlife observer: They’d be a great purchase for anyone who loves nothing more than observing wildlife and taking in the surroundings while trekking.

βœ… You wear glasses: They have very good eye relief, making them easy and comfortable to use if you wear glasses.

Don’t buy it if:

❌ You want to do some stargazing: They lack the light-gathering prowess needed for dedicated skywatching, so we’d recommend opting for a more suitable option. 

The bottom line

πŸ”Ž Olympus WP II 8×25 The Olympus 8×25 WP II’s seamless housing and exquisite optical system offer small but clear, crisp views of bright targets with stunning contrast. β˜…β˜…β˜…β˜…Β½

The Olympus WP II 8×25 compact binoculars sit at the top of our list thanks to their fantastic optics. No matter what your subject is, you’ll find clear and crisp views through these, with good contrast and high color fidelity to boot.

They’re not the top choice for stargazing β€” their 8x magnification and 25mm objective lenses don’t offer enough light-gathering power for a serious look at the night sky. That said, they are more than adequate for casual observations and make a truly excellent all-round pair of binoculars.

These binoculars are comfortable to hold for long viewing sessions thanks to weighing only 9 oz. (260g) and having a grippy rubber-coated finish. Despite being lightweight, they feel sturdy and robust with great build quality. They’d be ideal for a range of outdoor pursuits, such as hiking and wildlife watching, since they are nitrogen-filled, fog-proof, and waterproof. We had no problems with water or fogging even when we tested them in difficult weather conditions.

The high-quality BaK-4 roof prism design with fully multi-coated lenses offers small but detailed views of bright night sky objects of at least +4.0 magnitude. The field of view measures 6.2 degrees, so you’ll fit about 12 moon widths in the view to give you an idea of scale.

We were pleased to see no color fringing and the twistable eyecups provide a 15mm eye relief which is suitable to use with spectacles. If you’re looking for a multi-purpose pair with great optics, then look no further, but there are better choices out there for dedicated skywatchers.

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Olympus WP II 8×25
Attributes Notes
Design Lightweight, portable design.
Performance Small, crystal clear views with good contrast.
Functionality Low light-gathering prowess.

Best for portability

Best for portability: These small, stylish binoculars bring a prestige brand into the affordable range

Specifications

Magnification: 8x

Objective lens diameter: 21mm

Angular field of view: 6.3-degrees

Optical design: Roof prism

Glass: Multi-coated, BK-7

Eye relief: 10.3mm

Weight: 6.9 oz (196g)

Reasons to buy

+

They look great with funky styling

+

Lightweight means they’re easy to hold

+

Tiny size, slips right in a pocket

Reasons to avoid

Not waterproof, bad for heavy downpours

Limited folding to make it easier to transport

No BaK-4 prisms

Buy it if

βœ… You want to travel with them: These binoculars are small and lightweight, so they’re extremely easy to carry around with you.

Don’t buy it if:

❌ You want something for all weathers: They are not waterproof, so if you want to use them outside in any weather, consider another pair.

❌ You need to wear your glasses when using binoculars: The 10.3mm eye relief isn’t very glasses-friendly, so a different model would be better.

The bottom line

πŸ”Ž Nikon Aculon T02 8×21 Despite minor flaws, their attractive design, high portability and good optics make them worth considering. β˜…β˜…β˜…β˜…Β½

While the Nikon Aculon didn’t quite make our top spot, they’re a serious contender amongst our picks of the best compact binoculars β€” and they’re even at a slightly lower price point than the Olympus pair. So if you’re conscious of budget, perhaps these might be your top consideration.

We love just how compact these binoculars are: They measure 3.4 x 4.1 inches (8.6 x 10.4cm) and weigh only 6.9oz (196g). You’ll barely notice them in your bag and they’ll fit in most pockets just as easily as a smartphone. 

They’re pretty durable, too, with a hard-wearing body. They aren’t waterproof, although you should be fine in a light drizzle, but they do have nitrogen filling to protect from fogging. Because of their durability (and fairly low price), they’re a good option for children. You can even select the color of the body, with a few available to choose from, giving them some semblance of customizability. Unnecessary, but rather nifty.

Coming in at a slightly lower price point than the Olympus pair, the Nikon Aculon T02 8×21 also makes a great multi-purpose pair of binoculars. They are extremely compact, measuring 3.4 x 4.1 inches (8.6 x 10.4cm) and weighing only 6.9 oz (196g), so they’ll slip into your pocket just as easily as your smartphone. Their smooth and lightweight build also comes in a choice of different colors and they’re comfortable to grip for long observing sessions. We think their size and durability make them a fantastic option for kids too.

The optics impressed us in our Nikon Aculon T02 8×21 review, giving pin-sharp views of the moon with just a little chromatic aberration along the lunar limb which was barely noticeable. The focuser is very accurate and allows for minute movements to get your object of interest perfectly in focus, and they also have excellent color fidelity.

There were a couple of small downsides to the design. The Nikon Aculon only comes with a 10.3mm eye relief, meaning they’re not ideal for people who need to wear their glasses when using binoculars. They also may not be the best choice if your main interest is stargazing because they lack the light-gathering capabilities required to view fainter deep-sky objects and they don’t feature BaK-4 prisms, unlike of their some competitors.

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Nikon Aculon T02 8×21
Attributes Notes
Design Lightweight and pocketable.
Performance Good optics and accurate focuser.
Functionality Not waterproof, bad for heavy downpours.

Best build quality

Minox X-Lite 8×26

Best build quality: While the Minox are a little pricey they’re durable and built to last

Specifications

Magnification: 8x

Objective lens diameter: 26mm

Angular field of view: 6.8-degrees

Optical design: Roof prism

Glass: Phase-corrected, K9

Eye relief: 16mm

Weight: 10.2 oz (289g)

Reasons to buy

+

Waterproof (IPX7)

+

Nitrogen filled

+

Wide field of view

+

Premium build quality

Reasons to avoid

Premium price

Quite heavy in the hand

Low availability at present

Buy it if

βœ… You do a range of activities: They are perfect for all outdoor activities, whether hiking, traveling, bird watching or stargazing.

Don’t buy it if:

❌ You want something super lightweight: While they’re not super heavy, they certainly aren’t the lightest pair of compact binos.

The bottom line

πŸ”Ž Minox X-Lite 8×26 The X-Lite range is versatile and perfect for all outdoor activities, whether hiking, traveling, bird watching or stargazing. These optics are the go-to for all your needs. β˜…β˜…β˜…β˜…Β½

The Minox X-Lite 8×26 are more affordable than the binoculars in Minox’s X-Active range, but they still offer great performance and a very impressive build quality. The optics on these binoculars give good color rendition and contrast since they’re made from high-quality K9 glass with roof prisms and phase correction coating. You also get a surprisingly wide field of view for an 8x pair of compact binoculars, covering 6.8 degrees and 358 feet at 1000 yards.

The X-Lite binoculars are a bit heavier than other compact sets on this list β€” they weigh 10oz/289g β€” but they’re still plenty light and small enough to be considered ultra-portable. The slight extra weight on them lends to their sturdy construction: They’re covered in a textured material and have a larger grip surface, making them comfortable to hold. 

If you’re a glasses-wearer, you’ll also find the Minox X-Lite 8×26 comfortable to look through. The eyecups offer a 16mm eye relief, but they’re adjustable and can twist upwards if you need to do so.

These compact binoculars are a great choice if you’re going to be using them in various weather conditions: they have an IPX7 waterproof rating and they’re nitrogen filled to prevent fogging. So whether you’re birdwatching in the rain or using them on drizzly days, you needn’t worry. They’re can also withstand submersion for up to 30 minutes, meaning you can use them near bodies of water without worrying too much about dropping them in.

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Minox X-Lite 8×26
Attributes Notes
Design Quite heavy in the hand but good eye relief.
Performance Wide 6.8-degree field of view.
Functionality Fog proof and IPX7 waterproofing.

Best value

Celestron UpClose G2 10×25

Best value: These 10x binoculars perform better than their 8x counterpart

Specifications

Magnification: 10x

Objective lens diameter: 25mm

Angular field of view: 5.7-degrees

Optical design: Roof prism

Glass: Multi-coated, BK-7

Eye relief: 11mm

Weight: 11 oz (312g)

Reasons to buy

+

25mm objectives

+

Water-resistant

+

Great value price

Reasons to avoid

Heavier than some

Economy glass

Buy it if

βœ… You want to do some stargazing: They give great low light results thanks to their higher twilight factor.

Don’t buy it if:

❌ You want the highest specs: Budget binoculars don’t tend to have the best specs β€” if that’s what you want, you’re going to have to part with more cash.

The bottom line

πŸ”Ž Celestron UpClose G2 10×25 Not the highest spec compared with models on this list β€” you will get partially multi-coated lenses and BK-7 glass roof prisms. Still, they are well-priced and come with the reassurance of a limited lifetime guarantee. β˜…β˜…β˜…β˜…Β½

We’re used to finding Celestron in our lists since the company is known for its high-quality telescopes and binoculars. But we felt their UpClose G2 binoculars were particularly worthy of note for offering a great range of features at an affordable sub-$30 price point.

These binoculars have a neat and compact design at only 3.0 x 2.2 x 4.5 inches (76 x 51 x 114mm), so they’re very easy to slip into your pocket when you’re out and about. Glasses-wearers will also appreciate the fold-up eyecup design, which lets you simply fold the eyecups down and out of the way whenever you’re wearing your glasses. They also sport a rubber coating, which adds a bit of robustness to the binoculars’ build quality.

These have a surprisingly good twilight factor considering their size and price (15.8), which offers better performance in low-light conditions. They’re a good choice for stargazing because of that, but they’re also great for all kinds of uses. They offer 10x magnification and a focus capability of just 15 feet, making them great for wildlife. We’d recommend these over the UpClose G2 8×21, which have a lower twilight factor in comparison (13).

These compact binoculars don’t have the most advanced specifications on this list, but for the price you’re getting a fantastic deal. Their lenses are partially multi-coated rather than fully coated, and they use BK-7 glass roof prisms rather than superior BaK-4 glass. But these are trade-offs expected for this price point, and despite them, the Celestron UpClose G2 10×25 still perform admirably. Whether you’re a beginner or on a very tight budget, they’re a good choice. 

We haven’t reviewed the 10×25 yet, but we have reviewed the Celestron UpClose G2 10×50, which we loved for astronomy.

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Celestron UpClose G2 10×25
Attributes Notes
Design Compact with fold-up eyecups.
Performance Good in low-light conditions.
Functionality Economy BK-7 glass but 10x magnification.

Best budget option

Best budget option: More than suitable for multi-purpose daytime use and some astronomy viewing

Specifications

Magnification: 8x

Objective Lens Diameter: 25mm

Angular field of view: 6.2-degrees

Optical design: Reverse Porro Prisms

Glass: Multi-coated, BaK-4

Eye relief: 15.5mm

Weight: 12.5oz (355g)

Reasons to buy

+

Incredibly sharp images

+

Compact design

+

Wide field of view

Reasons to avoid

Small aperture for astronomy

Expensive β€” for a similar price you can get more powerful binoculars

Buy it if

βœ… You’re a casual viewer: For a decent grab-and-go pair that will serve you well for casual day and nighttime viewing, these are a good option.

Don’t buy it if:

❌ You’re a serious skywatcher: If you want to take your stargazing to the next level, you’ll likely outgrow them quickly.

The bottom line

πŸ”Ž Nikon Travelite EX 8×25 These pocket-sized binoculars are compact, well made and lightweight, making them a handy accessory, but unfortunately β€” due to their small 25mm aperture β€” we could not see much celestial detail. β˜…β˜…β˜…β˜…

The Nikon Travelite EX 8×25 compact binoculars are a great budget option for casual users or beginners. They’re sturdy and well-made, coming from a brand with excellent pedigree. They have a surprisingly wide field of view given their small size β€” and we also love that they come with a carry case, making them ideal for travel.

In our Travelite EX 8×25 review, we praised the eye relief of these binoculars, stating they’re great for glasses-wearers. The eyecups feature O-ring seals, which are nitrogen filled to prevent fogging, and there’s also waterproofing up to a depth of two meters for five minutes β€” if you’re using them near a body of water, then, you don’t need to stress too much about accidentally dropping them in (though of course try not to!).

As far as stargazing goes, they offer enjoyable night-sky viewing with a 6.2-degree view that can fit in all three of the stars on Orion’s belt. We were able to make out the craters of the Moon, and their light weight means that we experienced no shaking to affect the view, which can be a problem when holding larger and heavier binoculars in your hands.

However, you need to have realistic expectations of what you’ll be able to observe in the night sky with these binoculars. The 25mm aperture is too small to view Saturn’s rings for example, and it’s possible to buy a larger pair of binoculars for a similar price. For this reason, we’d only recommend them for casual stargazers or people who need a portable pair for a range of different purposes. Serious skywatchers will probably want to look elsewhere.

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Nikon Travelite EX 8×25
Attributes Notes
Design Sturdy and durable, with a rubberized coating.
Performance Very good contrast when observing bright objects.
Functionality Lacks great light-gathering power but has decent night-sky views.

Best waterproof model

Bushnell H20 8×25

Best waterproof option: The Bushnell H20’s have many quality features an impressively low price

Specifications

Magnification: 8x

Objective lens diameter: 25mm

Angular field of view: 6.9-degrees

Optical design: Roof prism

Glass: Multi-coated, BaK-4

Eye relief: 12mm

Weight: 10.23 oz (290g)

Reasons to buy

+

Hardy and waterproof

+

Multi-coated and BAK4 glass

+

Great value

Reasons to avoid

Heavier than others

Short eye relief

Buy it if

βœ… You use them in all weathers: These binos are hardy and water and fog-proof, so you can rely on them in any weather.

Don’t buy it if:

❌ You wear glasses: The eye relief on these binos isn’t the best, so if you wear glasses, there are better options.

❌ You want something pocketable: While they’re fine for tossing into your bag, they’re probably a little large to fit into your pocket.

The bottom line

πŸ”Ž Bushnell H20 8×25 Impressive specifications for a very reasonable price, including multi-coating (though not fully multi-coated) and BaK-4 roof prisms. β˜…β˜…β˜…Β½

The Bushnell H20 8×25 compact binoculars sport pretty impressive specifications given their reasonably low price. Their BaK-4 roof prisms and partial multi-coating means you’re getting good, sharp views, and they’re pleasant to look through. They have a 6.9-degree field of view, which is pretty good in our opinion.

They’re also comfortable to use thanks to their large, easy-to-grip center focus knob. You can use that to make adjustments, and we’ve found it’s easy to use even when you’re wearing gloves given its size β€” perfect if you’re using these binoculars on a chilly winter evening.

While they’re not quite pocket-sized at 127 x 101.6 x 69.5mm, they are still compact enough to toss into your backpack when you’re heading on an outdoor camping trip, and you won’t feel their weight. These binoculars are waterproof and nitrogen-purged to prevent fogging, plus Bushnell provides a manufacturer’s guarantee for added peace of mind.

With an eye relief of 12mm, the Bushnell H20 8×25 might not be the best choice for those who wear glasses. However, they come with a rubberized, textured coating for protection against knocks and to enhance hand grip.

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Bushnell H20 8×25
Attributes Notes
Design Hardy and waterproof.
Performance Multi-coated and BAK4 glass.
Functionality Eye relief a bit short for glasses.

Best styling

Pentax UD 9×21

Best styling on compact binoculars: We love the design, colors, and light weight of these Pentax UD’s

Specifications

Magnification: 9x

Objective lens diameter: 21mm

Angular field of view: 6-degrees

Optical design: Roof prism

Glass: Fully multi-coated

Eye relief: 9.9mm

Weight: 6.87 oz (198g)

Reasons to buy

+

Fully multi-coated

+

Tiny size

+

Choice of fun colors available

+

Includes a tripod mount

Reasons to avoid

Plastic chassis 

Small exit pupil

Buy it if

βœ… You want something small: These binos are tiny and lightweight, so will serve you well when traveling.

Don’t buy it if:

❌ You want high magnification: While they aren’t bad in terms of magnification, there are certainly better options out there if that’s what you’re after.

The bottom line

πŸ”Ž Pentax UD 9×21 If you’re struggling to choose between the easier-to-hold 8x magnification or 10x magnification for closer views (especially noticeable on the moon and planets), then here’s a compromise β€” 9x magnification, offering most of the benefits of both. β˜…β˜…β˜…Β½

The Pentax UD 9×21 offer a great middle ground between 8x magnification, which can be easier to hold, and 10x magnification, which offers a more detailed view of the moon and planets. The 9x magnification on these binoculars gives users the best of both worlds, and they come with high-quality optics that are fully multi-coated as well.  

These binoculars are an excellent option if you want something very lightweight. To reduce weight, they’re crafted with a plastic chassis instead of metal, and instead of rubber armor, they feature two small thumb rests for grip. This design choice results in a weight of only 195g, and with dimensions of 10.8 x 8.7 x 3.8 cm, they’re incredibly portable and can easily fit in your pocket.

Considering how lightweight these compact binoculars are, we’ve been very impressed with how they handle. They have a large focus wheel which is nice and easy to use, and just two rotations will span the entire range of focus. We should note that despite being compact, these binoculars do come with a tripod mount β€” but if you want to use it, you’ll need to purchase an (inexpensive) adapter.

The Pentax UD 9×21 binoculars have a field of view of six degrees. We consider this to be adequate, but it’s worth considering that it’s not as big as other compact binoculars. There is also a 10×21 version of the Pentax UD, but we think the 9×21 is the better option due to better eye relief and the fact they have multi-coated lenses. 

One neat thing to note about these compact binoculars is that they come in some bold colors, including orange, lime green and hot pink. They’re always easy to spot, and will likely be more appealing to kids as a result.

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Pentax UD 9×21
Attributes Notes
Design Lightweight plastic build with fun colors.
Performance Large and accurate focus wheel.
Functionality Includes a tripod mount.

Best for travel

Best for portability: Tiny but still offer fantastic clarity and performance to compete with the big-name brands

Specifications

Magnification: 12x

Objective lens diameter: 25mm

Angular field of view: 273-degrees

Optical design: Reverse porro prism

Glass: Fully multi-coated, BaK-4

Eye relief: 15mm

Weight: 8.8 oz (249g)

Reasons to buy

+

Feel durable in hand

+

Lots of texture provides good grip

+

Easily pocketable

+

Low price

Reasons to avoid

Flimsy eyecups

Not waterproof

Packaging is poor

Buy it if

βœ… You want to take them everywhere: They are incredibly small and lightweight, perfect for taking hiking or on camping trips.

Don’t buy it if:

❌ You wear glasses: They have short eye relief, so not ideal if you wear glasses.

❌ You want to use them in all weathers: Although they do claim to be waterproof, we weren’t convinced. They’d be fine for light rain but do so at your own risk.

The bottom line

πŸ”Ž Occer 12×25 Surprisingly, the Occer 12×25 binoculars offer good quality views considering their tiny design. They are ideal for keeping in your pocket and the perfect size for children and small hands. β˜…β˜…β˜…Β½

Occer may not be a brand you’ve heard of before, but this is an interesting new entry into the compact binoculars world. Measuring only 110 x 50mm, these binoculars are truly tiny and therefore unrivalled when it comes to traveling or slipping a pair in your pocket on the off-chance you might need them when you’re out and about. We also think they make a very competitive pair for kids owing to their size and close-range viewing capabilities.

Despite the off-putting packaging, which looks a bit cheap and clumsy, we were pleasantly surprised by the clear and bright views offered by these binoculars. They even had less chromatic aberration than some better-known competitors, and we certainly thought they held their own at such an affordable price point. They can offer decent views of the Moon and its craters but, as is often the case with compact binoculars, they don’t let in enough light for serious stargazing.

Unfortunately, these binoculars do not come with objective lens caps or eyepiece covers, which will make it harder to keep them in good condition, particularly if you are slipping them in a pocket with keys and other items that have the potential to damage the lenses. We also felt that the eyecups folded down a little too easily when you applied any pressure while viewing things, so we would have appreciated them being a bit more solid. But for the price, they would make a good pair for general uses like sport or nature observing and would also be a great choice as an affordable children’s pair.

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Occer 12×25
Attributes Notes
Design Lots of texture provides grip.
Performance Bright and colorful views.
Functionality Short eye relief.

Best for high magnification

Sunagor Mini Pocket 18×21

Best high power compact binoculars: Sunagor pack an ambitious 18x magnification in their Mini Pocket binocular

Specifications

Magnification: 18x

Objective lens diameter: 21mm

Angular field of view: 3.9-degrees

Optical design: Reverse Porro

Glass: Multi-coated

Eye relief: Not specified

Weight: 6.4 oz (181g)

Reasons to buy

+

High magnification

+

Lightweight

+

Inexpensive

Reasons to avoid

Limited use for astronomy

Only partial multi-coating

Buy it if

βœ… You’re on a budget: They’re not the cheapest in this guide, but they are pretty affordable.

Don’t buy it if:

❌ You’re a keen stargazer: They have limited astronomy use, so if that’s what you’ll be using them for, there are better options.

❌ Your kids want to use them: Their high magnification means more wobble, and as there’s no tripod socket, kids would get frustrated very quickly.

The bottom line

πŸ”Ž Sunagor Mini Pocket 18×21 With objective lenses of just 21mm, these binos are of limited use for astronomy duties. Still, we include them here because they will deliver the ‘wow’ moment when turned to look at the moon for the first time with 18x magnification. β˜…β˜…β˜…

Sunagor specializes in crafting high-power binoculars, and they claim that these are the most compact and lightweight 18x magnification binoculars on the market. Weighing less than 200g, they are certainly portable and can fit in a pocket. However, due to their single-hinge design, they don’t fold up as small as some other models in this guide. 

While these lenses may not feature full multi-coating and there’s no guarantee of premium glass in the barrels, they do provide an impressive 18x magnification, and the image clarity is satisfactory enough for regular use.

The downside of having such a high magnification in handheld binoculars, however, is that it’s often difficult to get a steady view. There’s no option to hook them up to a tripod either, as they have no mount – so holding your binoculars steady is your only option.

Because of that, we also wouldn’t recommend the Sunagor Mini Pocket 18×21 binoculars for kids. They’re lightweight enough for little hands to hold, sure, but the amount of power means that every wobble will quickly become frustrating – and when each wobble is magnified by 18x, there’ll be a lot of frustrations.

These binoculars have small 21mm objective lenses, so they’re not ideal for astronomy. However, we’ve included them because they can still give you that ‘wow’ experience when you use their 18x magnification to observe the moon for the first time.

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Sunagor Mini Pocket 18×21
Attributes Notes
Design Small and lightweight.
Performance Limited astronomy use.
Functionality High 18x magnification.

Best for versatility

Pentax VD 4×20

Best for versatility: Is it a binocular, a pair of monoculars, or a tiny telescope?

Specifications

Magnification: 4x

Objective lens diameter: 20mm

Angular field of view: 10-degrees

Optical design: Roof prism

Glass: Full multi-coating plus phase coating

Eye relief: 19mm

Weight: 12.17 oz (345g)

Reasons to buy

+

Novelty value

+

Quality optics

+

Waterproof

Reasons to avoid

Expensive

Low power

Fiddly focus

Buy it if

βœ… You want novelty and quality: This model can act as a binocular, a pair of binoculars and a tiny telescope, giving various different viewing options.

Don’t buy it if:

❌ You don’t have a big budget: They are on the more expensive end of the market, so only those with bigger budgets would buy them.

❌ You want easy viewing: As each tube has to be focused individually, it can quickly become tedious and fiddly.

The bottom line

πŸ”Ž Pentax VD 4×20 Although they may not be a top recommendation, we’ve included these binoculars for their cleverness and novelty factor. β˜…β˜…Β½

When is a pair of binoculars not a pair of binoculars? When it’s a pair of monoculars. Pentax’s slightly gimmicky binos can disassemble to provide two 4x monoculars and then screw together to create a 16x spotting scope.

Although they are not the lightest on the market, weighing in at 12.9 oz (345 g), they feel more substantial and less toy-like than others. You’d be hard-pressed to find something more compact.

This is an undoubtedly versatile device, but using the Pentax VD 4×20 can quickly become tedious. Why? Because each tube needs to be focused independently. We can imagine some scenarios where this might be handy, but for most users, it’s extra faff when setting up. Although despite providing only 4x magnification when used as binoculars, they offer a wide field of view which is nice.

That binocular magnification may be underwhelming, but configure the VD 4×20 into telescope mode and you can enjoy 16x magnification. When used like this, however, the field of view is very small β€” just 2.6 degrees β€” so it’s not all that useful in some situations. For viewing the moon it might be great, but you won’t be able to enjoy much else in the night sky.

What is neat, though, is that the Pentax VD 4×20 can split into two monoculars, allowing two users to make use of its light-gathering power. But given the fairly high price of this, you’d probably be better off buying two separate pairs of binoculars β€” they’d have a lot more power, too. Still, there’s no denying there’s a nifty novelty factor here.

Swipe to scroll horizontally
Pentax VD 4×20
Attributes Notes
Design Versatile design to be binocular, monocular and telescope.
Performance Quality optics.
Functionality Fiddly focusing.

Compact Binoculars FAQ

Which compact binoculars are the best?

Although we’ve rounded up the best compact binoculars in this useful guide, you may be wondering ‘which compact binoculars are the best for me?’ The main things to consider when shopping for compact binoculars are the binocular numbers. That is: Magnification β€” usually 8x or 10x and sometimes referred to as powerβ€” and the diameter of the objective (front) lenses. Because compact binoculars are small and light, it’s easier to hold them still and so you don’t need to worry about higher magnification causing unusable wobble, negating the need for a tripod. Remember though, lower-power binoculars will give a brighter image, making faint objects such as nebulas more visible. 

What size binocular lens should I buy?

It is best to go for the largest lens diameter you can get. Bigger lenses mean more light-gathering power and thus better views for you. Compact binoculars tend to have objectives in the 20-25 mm range. However, it is worth noting that even the largest of these will collect only a quarter as much light as a pair of conventional 50 mm binoculars. We don’t recommend compact binoculars with a zoom feature, as this is simply asking too much of the smaller objective lenses on this type of instrument. 

What type of compact binoculars should I get?

Compact binoculars are usually roof prism types, as this arrangement provides straight tubes and lends itself to foldability. It is rare to find conventional Porro prism compact binoculars, but some use the reverse-Porro arrangement, resulting in objective lenses closer together than the eyepieces. Check what type of glass the prisms are made from; the best you can get is BaK-4, while budget binoculars often use BK-7 or K9 (these two are more or less equivalent). 

What’s the difference between multi-coated or fully coated optics?

You should consider the type of lens coating that is used. Lenses will be described as coated, multi-coated, or fully multi-coated. The best will be fully multi-coated with phase coating on the prisms. The best will also be nitrogen-filled to eliminate the risk of internal fogging. Some compacts are waterproof or water-resistant, which is always a good idea for use in all weather and gives the user extra peace of mind.

Which brand of binoculars are best?

When shopping online, you may come across lots of lesser-known brands offering what seem to be unmissable bargains but, as ever, buyer beware. Products are not always described accurately, particularly when sold by traders on third-party websites, and we advise treating claims with suspicion. Ask yourself if you believe these very cheap binoculars have all the features they claim or whether some of the claims might be lost in translation. 

Sometimes the comfort of a trusted, known brand that offers a warranty is worth paying that little bit extra for. That said, you will see a couple of models in this guide that are lesser known but that we’ve reviewed and would recommend as good-value-for-money.

How we test the best compact binoculars

To guarantee you’re getting honest, up-to-date recommendations on the best compact binoculars to buy here at Space.com, we make sure to put every binocular through a rigorous review to test each instrument fully. Each telescope is reviewed based on many aspects, from its construction and design, to how well it functions as an optical instrument and how it performs in the field.

Each pair of binoculars is carefully tested by our expert staff or knowledgeable freelance contributors who know their subject areas in depth. This ensures fair reviewing is backed by personal, hands-on experience with each binocular and is judged based on its price point, class and destined use. For example, comparing a pair of 25×100 mammoth binoculars to a compact pair of 8x25s wouldn’t be appropriate though each binocular might be the best pick in their own class.

We look at how easy they are to operate, whether the length of eye relief can be adjusted for spectacles wearers (the longer the better) if a binocular comes with appropriate accessories (lens caps, neck strap, cleaning cloths) or carry bags and also make suggestions if a particular set of binos would benefit from any additional kit to give you the best viewing experience possible.

With complete editorial independence, Space.com are here to ensure you get the best buying advice on binoculars, whether you should purchase an instrument or not, making our buying guides and reviews reliable and transparent.

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