B08GPF6N89 10×50 Marine Binoculars with Compass for Adults – Waterproof BAK4 Prism FMC Lens Binoculars with Rangefinder Compass and Shoulder Harness Strap for Navigation Hunting Bird Watching

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【Professional Marine Military Binoculars】10X50 binoculars provides 50mm large objective lenses and 22mm eye relief, which offer a extra large view and comfortable observation. 6.8mm exit pupil, and field of view is 396 feet at 1000 yards / 132 meters at 1000 meters. With ±5 diopter left and right diopter ring, You can adjust the distance for better viewing without glasses and for fine focusing.
【Binoculars with Rangefinder Compass】Night vision binoculars illuminated compass built-in for direction location, with an internal rangefinder for calculate the distance and size of the object on the left eyepiece directly. The ruler and the compass illuminated by the light button, provides the maximum brightness of the image even in low light conditions(not totally dark).
【High Quality Optic System】High refractive index BAK4 Porro Prism eliminates the stray light and improves color reproduction to 99.99%. Green FMC anti-reflective coating reduces the reflected light in the objective lens and improves light transmission, image brightness and image sharpness.
【IPX7 Waterproof Binoculars】This binocular come with Nitrogen-filled waterproof, fog-proof and Anti-shake design. O-ring sealed for complete waterproof protection and float on water so no worries if dropped into the water; Dry nitrogen-purged and sealed to prevent fogging and moisture damage in all weather conditions.