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Best Monocular For Sailing, Star Gazing & Stabilisation - Reviewed 2022 - 2023

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Updated on: 

January 2, 2022

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Our Recommended Best Monocular For Sailing, Star Gazing & Stabilisation Is The K&F Concept 12X50 Monocular!

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The Best Monocular Reviews & Buying Guide

If you travel a lot and like to bird-watch or magnify your view of your surroundings, then you most likely use your average binocular, however, when you are on the move, binoculars can become a little bulky, making a monocular an excellent choice instead.

Even though this single instrument with one eyepiece might be a little less popular than a double binocular visual function, these little devices can still provide you with retinal image quality and great magnification from their multi-coated lenses. 

To help you pick which monocular is right for you, we have rounded up the best models on the market and reviewed them so as you can find the best monoculars out there for stargazing, sailing, and stabilisation. 

Let's get reviewing!

Our Top Monocular -

The K&F Concept 12X50 Monocular (Editor's Pick!)

K&F are very well-known and popular in the binocular industry and telescope industry for producing high-quality optics for magnification. 

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This K&F concept monocular in particular features a 50mm objective lens and a 12x magnification level to improve the quality of vision and help visual performance. The monocular vision additionally uses fully coated BAK-4 prism lenses to help improve optical quality and help light transmission. 

For greater eye comfort, the monocular has a 14mm eye relief and 80 ft field of view, the design has a centre two-way focusing wheel as well and the one-piece eyepieces make it easier to use for myopic patients. 

Material-wise the monocular by K&F is waterproof and fog proof and has a total weight of only 280g, it can be mounted to a tripod or also used with a smartphone to take pictures of the natural conditions. Its overall material is made out of rubber for better grip. 


To conclude, the K&F concept monocular is a great option to magnify and view the retinal-image quality of natural conditions from a single instrument. 

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The model itself is very affordable too and easy to use, allowing it to be stored in your pocket and travelled with for when you need distance visual.

Downfalls of this K&F monocular have to be its visual function for smartphones which is said to be difficult to use. The instructions included with this model are also reported to be for binocular vision instead of monocular. 


  • 12x magnification with an 80-yard field of view.
  • 14mm eye relief. 
  • Waterproof. 
  • BAK-4 prism lenses. 
  • Easy to use for myopic patients. 
  • Durable rubber design.

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  • The smartphone function does not work. 
  • Instructions are for binoculars, not monocular vision.

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Our Runner Up! - Gosky 12x55 High Definition Monocular

The Gosky monocular features a 55mm objective lens diameter and has a manual focus system inside for visual performance. 

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Main specs of this monocular by Gosky are its 12x magnification level and BAK-4 prism green film multi-coated lens to improve the quality of vision. For visual function, there is also a 1000 yard wide field of view, 18mm eye relief, and adjustable twist-up eyecups for better comfort. 

Design-wise the monocular by Gosky weighs only 700g and it is made of durable rubber armour, the monocular is waterproof and fog proof too and it has a tripod mount thread. 

Extra features included with this monocular are its carrying case, digiscope adaptor and lens protection covers. 


Overall, this Gosky monocular is a great budget option on our list for viewing distant objects for a long period thanks to its high comfort eye cups design and lightweight, which allows you to use the monocular without getting fatigued like you would with the average binocular. 

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We also liked this Gosky monocular due to its high durability with its rubber armoured design, allowing you to use the device in all weather situations. 

Negatives of this Gosky monocular model have to be its 12x magnification level which is reported to be limited, the phone attached to the monocular is also said to be hard to function. 


  • 1000 yard field of view. 
  • Affordable. 
  • Light in weight. 
  • Easy to grip with durable design. 
  • 18mm eye relief. 
  • Waterproof. 

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  • Poor magnification level reported. 
  • Phone attachment is weak. 

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Rexing B1 Basic Night Vision Goggles/Monoculars

These Rexing B1 monoculars come with a night vision function and a 25mm objective lens for visual function. 

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Important features of this monocular are its 10x optical zoom and 4x digital zoom for viewing objects up closer, it also uses its seven levels infrared night vision to view objects in the dark with a distance visual of up to 300m away. 

In terms of recording, a single instrument can record up to 960p at 30fps and take images at 1mp 1280x960 quality by supporting a micro SD card of up to 32GB. It also has a 1.5-inch LCD screen for viewing visual activity. 

Design-wise the Rexing B1 night vision monocular visual performance is powered by five batteries which produce a 12-hour running time to see natural conditions, the total monocular has a weight of 380g and can fit in your pocket for ease of use. 


If you are after a monocular which can give you a good quality of vision at night and allow you to record and upload visual activity, then this Rexing model is one of the most suitable single instrument models on our list for night-vision performance. 

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Not only can you magnify with this monocular up to 10x away, but you can also use it as a mini camera to record distance visual subjects making it a 2in1 device for the price of just a monocular. 

Some negatives of this night monocular by Rexing have to be its stability on night mode which would need a tripod for extra support otherwise the visual performance will be shaky. The infrared night vision system is further said to be of poor quality.


  • Great visual performance at night. 
  • Lightweight and compact. 
  • Works well to record natural conditions. 
  • The single instrument can run for 12 hours. 
  • 10x optical zoom and 4x digital zoom. 

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  • Night mode is not of good quality. 
  • Stability is poor when used on night mode. 

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Pentax 63620 Monocular VM 6x21

This Pentax monocular is one of the more mid-range options on our list to magnify natural conditions and objects. 

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Feature-wise, the Pentax monocular comes with a 6x magnification level for visual performance and a 21mm objective lens, it also includes an 18x microscope for viewing small objects up close at the retinal-image quality and uses fully-coated optics to increase the detail you can see with your natural pupils. 

For the design the Pentax monocular can be used with a macro stand to view small objects up close, the weight of the monocular is only 300g and can fit neatly into the palm of a hand. It has a minimum focus distance of 70cm. 

The design of this monocular is also waterproof up to 1M and can be attached to a smartphone to record natural conditions via its adaptor. 


To conclude, this very compact monocular by Pentax is a great device to view natural conditions from a distance or to see them macro up close thanks to the addition of its microscope inside. 

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The model from Pentax is very lightweight too, making it easy to travel with a single instrument in your pocket, it also has night-vision performance for studying natural conditions in the dark which are limited by natural pupils. 

Downfalls of this Pentax monocular have to be its range of magnification which is very limited in comparison to the average binocular and other monoculars on our list. 


  • 18x microscope and 6x magnification. 
  • Retinal-image quality.
  • The lightweight of 300g. 
  • Waterproof. 
  • Can be used with a phone. 
  • Visual performance at night. 
  • Strap included. 
  • Waterproof to 1m.

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  • The magnification level is very poor in comparison to other models on our list.

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Vortex Optics Solo 10x25 Waterproof Monocular

The Vortex optics solo monocular features a 10x magnification for binocular vision and has a 25mm objective lens to help with the quality of vision. 

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Main specs of this monocular by Vortex are its fully coated multi-lens which help improve visual performance due to better light transmission, then retinal-image quality can also help you see up to 1000 yards away thanks to its wide field of view. 

This roof prism monocular design comes with a 14.5mm eye relief and an adjustable eyecup for better comfort when looking for long periods of focus distance. It also has fully rubber armoured and a non-slip grip, as well as it being fog proof and waterproof. 


Overall, this Vortex optics solo monocular is a great way to extend your natural pupils vision from a single instrument, the monocular by Vortex allows you to have binocular vision without the extra weight of carrying your average binocular. 

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Negatives of this monocular by Vortex have to be the pouch included with the device which is said to be limited. The focus ring to change focus distance is also said to be a little tight to use. 


  • 10x magnification. 
  • Good visual performance.
  • Fully multi-coated lens. 
  • Retinal-image quality. 
  • 14.5mm eye relief. 
  • Great focus distance. 
  • Fully rubber armoured. 

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  • The pouch is said to be of poor quality.
  • Focus distance is hard to change. 

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Which Is The Best Monocular For Stargazing, Sailing & Stabilisation?

To round up our best monocular reviewers, the top model on our list with the best visual performance has to be the K&F Concept 12X50 Monocular model. 

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We rate this K&F monocular as our number one because of its great magnification and visual performance which comes down to its coated lenses and easy to function focus system, making it great for myopic patients or just general use for activities such as boating or sailing. 

As a runner up, we would also suggest having a look at the Gosky 12x55 High Definition Monocular, this device not only has a powerful magnification but also a large objective lens which helps in light transmission and improving the image you see through the lens to your natural pupils. 

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The only reason we didn't place this Gosky model as our number one is due to the fact its phone adaptor is very weak, which might limit what you can record with your smartphone. 

What To Look For In The Best Monoculars (Our Best Buying Guide)

Before buying your best monocular model, it's a great idea to highlight what types of features you need to be looking out for in your best optics. 

You should also consider whether or not you need a monocular and how they match up to binoculars or telescopes for visual performance 

We have put all this important information down below in our buying guide along with some tips on how to use your monocular when you buy your best one. 

Why Choose a Monocular? 

First off, before we get into our best buying guide for you monocular, let's explore why you would choose a monocular, to begin with, and when to use one in certain circumstances. 

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A monocular is very similar to binocular vision and can give retinal-image quality through its single viewing scope when you look through with one eye, helping you magnify images and see them up close. 

It's best to choose a monocular over other device optics on the market if you are looking to use your monocular while travelling due to them being very lightweight and portable, allowing you to carry them around in your pocket without them taking up too much space. 

Monoculars are also great for activities such as stargazing as they are light on weight, which means you can hold them for long periods without getting too fatigued in comparison to binocular devices. 

We have listed out some of the best natural conditions to use a monocular below. 

  • Hunting - Monoculars are great for using during natural conditions such as hunting because they are quick and easy to take out when you need to identify a target. 
  • Birdwatching - If you are birding on the move, a monocular can also come in handy, especially if you get one with smartphone adaptability to record rare species of birds.
  • Hiking - Monoculars are perfect to use during hiking as their portability will not be too much to carry and they can help you scout potential routes on the move that your natural pupils might miss. 
  • Astronomy - A monocular is typically good enough to see some great astronomical sights such as the Milkyway and moon.

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Monoculars also have a great number of benefits and advantages compared to other magnifying devices on the market, we have bullet-pointed a few of these best advantages below. 

  • They are portable. 
  • Adjustable depth of focus. 
  • It can help vision issues with natural pupils. 
  • They are affordable. 
  • Durable. 
  • Can help visual performance with many activities. 

Top Features To Consider In a Monocular 

Choosing your best monocular is not all about how much it can magnify or its visual performance, you also need to consider many other important features in your model to be sure you are getting the best value for money from your device. 

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For example, lens coatings will help with the visual performance of your monocular when in use and produce retinal-image quality, while ease of use will help you spot things quicker with your single instrument. 

We have listed some of the essential features for you to consider in your best monocular below. 

  • Magnification - One of the most important features to consider in your monocular is its magnification rating. Just like a binocular function, the stronger your magnification, the closer you will be able to see a subject in detail. For the best monocular this should range between 7x and 12x so as you can get the most out of your visual performance.
  • Objective lens size - A bigger objective lens diameter on your monocular will create a brighter more detailed visual acuity in the image that you see, a bigger objective lens will overall improve the visual performance that your monocular has. 
  • Lens coatings - When looking at the best monocular on the market, ensure you check if its lens has multiple coatings. The best lens types to look for on a monocular are fully multi-coated lens as these will help remove fringes or chromatic aberration in the retinal-image quality that you see. Some of the best monoculars even have a green film to help improve the contrast you see in your image. 
  • Design - The design of your monocular should be easy to use so as you can change the depth of focus with ease and have a good grip. A rubber material is very durable to use when travelling too.
  • Field of view & exit pupil - A larger field of view will mean the bigger the image you will be able to see through the lens of your device. Exit pupil relates to the image created on the eyepiece of your monocular, this is best when around 7mm.
  • Size and weight - Most monoculars are very portable and small in size, but if you are looking to travel specifically with your model you might want to make sure that it can fit in your pocket and that it is not too heavy to use for long periods so as you cannot get fatigued. 

Monocular Vs Binoculars - Which One Should You Choose? 

It's no secret that monoculars came from binoculars and operate with a very similar binocular function, just with a single eyepiece. 

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It can be confusing to determine whether or not you should go for a monocular for visual acuity or choose a binocular for a wider field of view, so we have compared the two types of optics below to help you make your decision. 


Monoculars have the advantage over a binoculars design in terms of weight and portability, making them more travel friendly, they can also be attached to headgear and even paired with a smartphone to take great retinal-image quality pictures. 

These types of optics also tend to be easier to adjust than binoculars on the move and are better for eye sensitivity in patients and night-vision performance. 

Some disadvantages of monoculars in comparison to the binocular function have to be their smaller field of view, which makes them less efficient in tracking moving subjects such as birds. They can also give bad eye fatigue after long periods of use due to them having only one eyepiece. 


  • More portable.
  • Great for night-vision performance. 
  • Perfect for eye sensitivity in patients. 
  • Can be used with a phone to take images. 
  • Affordable. 


  • Can give bad eye fatigue. 
  • A smaller field of view. 


Binoculars on the other hand in comparison to monoculars have a much larger field of view due to them having a double-pass instrument for the lens instead of one tube, allowing you to track subjects such as animals with more ease and have better stability due to the use of two hands at all times. 

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These binoculars additionally give less eye fatigue than a monocular does and tend to have a much more powerful magnification. 

Drawbacks of binoculars, when compared to monoculars, are their bulky size which is less portable to travel with, they also tend to be more expensive and harder to set with the depth of focus.


  • Better field of view for visual performance. 
  • Less eye fatigue. 
  • More magnification.


  • Much bulkier. 
  • Harder to adjust focus. 
  • Heavy.

Conclusion - Which One Should I Choose?

Overall, if you want better magnification and a wide field of view to track subjects with such as birds, we would recommend going with a traditional pair of binoculars over a monocular, however, if you want to be magnifying subjects on the move, a monocular might prove better to use as it is more portable.

How to Use Your Best Monocular 

Using your monocular as a beginner is not always an easy task, so we have listed out some of our essential tips and tricks on how to use your monocular for the first time so as you can get the best results in terms of visual performance from your model.

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  • Don't stare into the infrared light - The infrared light on night-vision performance monoculars is very dangerous, avoid looking directly at this light when possible. 
  • Practice focusing - Practice makes perfect with a monocular, always try to focus on subjects first and keep track rather than try to focus on subjects in motion, to begin with as this will be more difficult. 
  • Use your dominant eye - If you have impaired vision or a general dominant eye, make sure to use this one to look through your monocular, failure to do so will lead to more eye fatigue. 
  • Keep steady - So as you can see the best images through your monocular in natural conditions, try to keep the device as steady as you can by either resting your elbows or even using a tripod. 

FAQs About Best Monoculars

Should I buy a monocular or a telescope? 

A telescope is much better for more magnification and uses for astronomical purposes as it is set stationary and very powerful, however, a monocular is the better choice for using on the go as it is very portable. 

How much do monoculars typically cost? 

This depends on the model you get and its features, but in general, the price of the model can range between £50-£300 and above. 

What does visual acuity mean on a monocular? 

Visual acuity on a monocular refers to the sharpness of the image that you see through the lens of the device, a better visual acuity means a more high-quality image. 

Does the exit pupil size on a monocular matter? 

The exit pupil size on your molecular is important as it refers to the amount of light bouncing off the eyepiece of your device, for most people this should be within a range between 4mm-7mm exit pupil size. 

Is a monocular also called a spotting scope? 

Monoculars which have a high magnification of over 20x might be classed as a spotting scope due to their high power, however can't be used as an actual scope. 

Our #1 Monocular For Sailing, Stargazing & Stabilisation 

Our number one monocular for sailing, stargazing, and stabilisation is the K&F Concept 12X50 Monocular model thanks to its affordable price, easy-to-focus system, and powerful magnification

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As a runner-up, we would suggest checking out the Gosky 12x55 High Definition Monocular too because of its accurate magnfication for viewing natural conditions and lightweight, making it great to carry around on the move. 

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Born and raised in the south coast of UK, a small town close to Cornwall, I have adventure in my blood. Ever since a young age, I have always been into the great outdoors and particularly love watching the natural wildlife. Birdwatching is what I enjoy the most, and thus my natural interest in binoculars began. I founded and run Best-Binoculars.UK a site where I talk about various aspects of and review binoculars. Hope you enjoy my ramblings :)

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