See distant objects clearly with this top-grade waterproof binocular. It has an alloy body with metal eye cups and is equipped with ED glass. This waterproof binocular comes in a compact size and can offer up to 10x magnification.
8x21 binocular with ED glass, new FBMC, BAK4.
MG alloy body and metal eyecups.
Silver coated and phased coated.
Power: 8x or 10x
Object lens dia.: 21mm for 8x, 25mm for 10x.
Type of prism: roof prism bak4.
Prism coating: yes.
Number of lens: 7pieces/5 groups.
Lens coating: new fbmc.
Focus system: cent.
Focusing lens: int.
Exit pupil diameter: 2.56mm.
Exit pupil distance: 15.8mm for 8x21, 15.5mm for 10x25.
Field of view: angle 6.8° ; 357ft/1000yds ; 119m/1000m for 8x21; angle 5.4° ; 285ft/1000yds ; 95m/1000m for 10x25.