Waterproof telescope W750 description:

Waterproof series:
Bak 4 Porro Prisms
Center Focus/Water-proof,Nitrogen filled
Twist-up Eyecups/Full rubber armor
Field angle:6.8°
Field of view at 1000m:119m
Field of view at 1000yds:357ft
Exit pupil:6.44mm
Eye-relief:24.5mm
Minimum focus distance:6m
Resolution(center):≤5°
Relative brightness:41.5
Twilight factor:17.8
Size:195*65*180
Weight:1000g
Focus system:center focus
Prism type:porro
Prism glass material:Bak4