Dontop Optics High Quality 20X80 Giant Waterproof HD Binoculars (8F/20X80)
1. High power, high definition.
2. Nitrogen filled, Highly waterproof, fogproof and shockproof, suitable for different weathers.
3. Fully metal body, special Cr-plating; Fully immitation leather armoured.
4. Individule focus.
5.80mm large object, allow many lights through the lens.
6.100% optical lens, Bake prism, and fully-mulit coated.
Objective dia.: 80mm
Field of view (at 1000m): 65m
Exit pupil: 4.4mm
Eye relief: 18mm
Min. Focus distance: 33m
Focus system: ICenter focus
Prism Type: Porro
Prism glass material: BaK-4
Dry nitrogen filled, 100% waterproof.
Efficiency with other model 4x/10x42 available.