Amazon.com Product Description
Brunton's highest fixed-power binocular, the Eterna High Power 15x in Mossy Oak camouflage is a jewel when viewing over long distances. Unlike most binoculars of this size, the High Power is remarkably lightweight and nimble at 32 ounces, yet still delivers the benefits of large 51mm objective lenses. The binocular also makes objects look remarkably sharp thanks to the integrated BaK-4 prism glass--made from a higher quality glass (barium crown) that helps produce brighter images and high edge-to-edge sharpness--and the trio of coatings, which include state-of-the-art phase coating, Emerald Fire full multi-coating, and AL reflective coating. Even discounting all the bells and whistles, the Eterna High Power is a tough customer, with a nitrogen-filled alloy frame and ergonomic body armor that's both waterproof and fog-proof.
Specifications range from a 200-foot field of view at 1,000 yards to a 15mm long eye relief to a 3.4mm exit pupil. The focus system, meanwhile, gets as close as 11 feet. Additional features include a multi-step eye relief system that's eyeglass-compatible, tripod/monopod compatibility, and neoprene Bino Glove lens covers. The Eterna High Power 15x measures 6.7 x 5.2 x 2.3 inches (WxHxD) and is backed by a limited lifetime warranty.
What's in the Box?
Binoculars, lens covers, neck strap, carrying case, user's manual.
Specifications:
- Power: 15x
- Objective diameter: 51mm
- Frame material: Aluminum
- Close focus distance: 11 feet
- Exit pupil: 3.4mm
- Eye relief: 15mm
- Field of view at 1000 yards: 200 feet
- Prism coating: AL
- Lens coating: Full multi
- Waterproof/fogproof: Yes
- Nitrogen filled: Yes
- Tripod compatible: Yes
- Weight: 32 ounces
- Dimensions: 6.7 x 5.2 x 2.3 inches (WxHxD)
Tech Talk
Exit Pupil--Refers to the size of the circle of light visible at the eyepiece of a binocular. The larger the exit pupil, the brighter the image. To determine the size, divide the objective lens diameter by the power (an 8x32 model has an exit pupil of 4mm).
Eye Relief--The distance a binocular can be held away from the eye and still present the full field-of-view. Extended or long eye relief reduces eyestrain and is ideal for eyeglass wearers.
Field-of-View (F.O.V.)--The side-to-side measurement of the circular viewing field or subject area, defined by the width in feet or meters of the area visible at 1000 yards or meters. A wide-angle binocular features a wide field-of-view and is better for following action. Generally, the higher the magnification, the narrower the field-of-view.
Product Description
The High Power 15X is the highest fixed-power binocular we build¿a jewel when viewing over long distances. The benefits of big glass are often overshadowed by the enormous weight of most binoculars this size. Not in this case. This Eterna is lightweight and nimble, making it desirable for the long haul. Get a sharp image with the help of BaK-4 prism glass, state-of-the-art phase coating and a readiness to get the job done when it counts the most. Aside from all the bells and whistles, this binocular is a trooper through and through. 6.7¿x5.2¿x2.3¿, 32 oz, 11 ft. Close focus, 3.4mm Exit pupil, 15mm Long eye relief, 200 ft. Field of view @ 1000 yds. Limited lifetime warranty.