What Battery Does Bushnell 7×50 Rangefinder Binoculars Have? – Here’s Everything You Need to Know About it & More!

Today, we are going to answer a frequently asked question “What are Bushnell 7×50 rangefinder binoculars?

Let’s find out everything you need to know about it.

What Battery Does Bushnell 7×50 Rangefinder Binoculars Have?

The batteries that are being used in Bushnell 7×50 Rangefinder Binoculars are CR2 batteries. CR2 batteries are cylindrical cell battery that has a Lithium inside.

Whenever you order these binoculars online either the batteries are not included or if included you get low-quality batteries. To avoid disappointment when you first use the equipment, we advise you to order suitable batteries at the same time when ordering binoculars.

As binoculars are used outdoors, we suggest the use of high-quality and famous brand batteries. Try to get Lithium batteries because these did not lose any of their charges during long storage and also do not lose performance in cold temperatures.

Note: If you want to know Why Are Prisms Used in Binoculars Instead of Mirrors click HERE.

Bushnell 7×50 Rangefinder Binoculars

These Binoculars are very useful for marine use. Special features and specifications are included to make it worthwhile for your sea voyage.

Features in Bushnell 7×50 Rangefinder Binoculars

It is a classic marine binocular with an internal rangefinder and illuminated compass.


A 7×50 binocular magnifies objects up to seven times.

Objective Lens

The objective lens is 50mm in diameter which is an important tool for taking photos.

Exit Pupils

Exit pupils are generous, meaning that light rays entering the eye can be seen even when looking directly into bright sunlight. The bigger the exit pupil, the more light there is coming into your eyes. This means that you can see things better.


The big opening lets in lots of light. The lens helps you see things better in low-light situations.

Binoculars also come in different sizes, but the most common ones are 8-30mm or 10-40mm. These two sizes are the most popular because they’re easy to carry around and use.

Specifications You Need to Look For

Focus Adjusting

Binoculars are great tools for spotting distant objects. However, if you want to see them clearly, you need to limit the power of the binoculars to something less than 10x. You should be able to spot distant objects without having to move your head or body.

A marine binocular should have a focus ring. This allows the user to adjust the focus of the lens without having to remove the eyepiece from the telescope.

Note; If you want to know more information about Binoculars we have a complete guide click HERE.


Marine binoculars are designed to be used while boating or fishing so,

  • They are often made of aluminum and are waterproof.
  • They come with a carrying case and the eyepiece is protected by a rubber seal.
  • They may also have an anti-fog coating. These coatings prevent moisture from fogging up the lenses.
  • Polycarbonate chassis are often used to enhance corrosion resistance.

Note: If you want to know Where Are Zhumell Binoculars Made click HERE.


Binoculars without prisms show reversed and inverted images. To correct this, light passes through a prism before exiting the rear of the binoculars.

BAK4 and BK7 Prisms

BAK4 prisms are not as rounded as the BK7 prisms and do not transmit light as efficiently as the BAK4. This is not to mean that the BK7 prism is bad; in general, they are of lower qualities than the BAK4 prism.

How can you tell what type of prism is inside a binocular?

An easy way to tell what type of prism is inside a binocular, if unsure, is to hold it away from your face and check the shape of the exit pupils.

If it is round, it’s a BAK 4, if it’s square it’s a BK 7. This becomes more important when your eye is moving around, because you may hit an edge of the exit pupil, and see a vignette effect.

Of course, even though prisms come in different shapes, they still vary in quality and clarity.

Porro Prism vs Roof Prism

Porro PrismRoof Prism
Most marine binoculars feature Porro prisms,
which provides a wider field of view and increased depth of field
Roof prisms are more compact and shorter, but also offer less viewing power.

Angle & Optimal Distance

Wide-angle binoculars are great for spotting distant objects, such as ships, planes, and wildlife. They’re also great for viewing large areas. But if you want to get closer to something, you’ll need to zoom in. A wide-angle lens lets you do both.

The optimal distance from the eyepieces to the eyes is about 10 inches (25 cm). Eyeglasses should be worn when using binoculars. Collapsing eyecups are available on some binoculars.

Individual Focus Vs Center Focus

Marine binoculars are usually of the individual focus variety. Individual focus Coatings mean that you adjust Marine each eyepiece separately.

Center Marine focus means that you change the focus on both Floating eyecups simultaneously. You should be Stabilized and choose whichever type of Binoculars focus works Binoculars better for you.

Note: If you want to know How to Take Apart Binoculars click HERE.

Special Features

  • Zoom function
  • Image stabilizer
  • Rangefinder
  • Splash-proof
  • Protection bag
  • Threaded tripod connector
  • Eyepieces for the spectacle wearer
  • Camera

Field of view

  • The field of view at 1,00m is 117°
  • The close-focus limit is 10,0m.
  • The light intensity is 51,0. Twilight Factor is 18,7.
  • The true Field of View is 6,7°.
What are Bushnell 7x50 Rangefinder Binoculars?

What Are the Uses of Bushnell 7×50 Rangefinder Binoculars?

Frequently Asked Questions – FAQs

How do “Auto Focus Binoculars” Work?

Binoculars are used to observe faraway objects. Their lenses are made to work with your eyes’ natural abilities to focus. So, you can see where the term “auto-focus” comes from.

What are the Advantages of Self-Focusing Binoculars?

Binoculars are smaller and lighter than normal ones. They are often used by people who want to see things quickly. They are great for seeing birds because they are quick to use.

What Are the Disadvantages of Auto Focus Binoculars?

  • Binoculars are great tools for those who want to see things up close. However, if you use them too much, they might cause you problems. You should never use them when driving because they make it harder to concentrate on other things.
  • By using too much by yourself, you might miss out on seeing other people around you.

Which is Better Central Focus Knob or Individual Eye Focus?

Both types of binoculars have their advantages and disadvantages. Central focus knobs are easier to use when looking at distant objects but require more adjustment than individual eye focusers. Individual eye focusers are harder to use when looking at close-up objects but do not need as much adjustment.


We hope you have a better insight into Bushnell 7×50 rangefinder binoculars. Every Binocular is used to see distant things, remember every environment is different like the sea, safari, forest, or mountains.

You must choose by keeping in mind the features and specs that will enhance the useability.

Feel free to comment below.

If you want more information about Binoculars we have a complete guide click HERE.


  • John Moses

    John is the Editor in Chief here at The Outdoor Stores. His area of expertise ensures that there is no one better to suggest which rifles are most suitable for your hunting experience. He is also available for you to contact him personally to discuss the types of animals you want to hunt and the terrain you will be hunting on. Feel free to read his posts for expert opinion on Rifles, Scopes, Rangefinders, Bonoculars and Monoculars.

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