Waterproof telescope M751 description:

Military binoculars series:
M751C with internal compass
Bak4 Prisms
New design of shock-resistant construction
The main binocular body housing consists of magnesium & aluminum alloy.
Non-slip pliable & durable rubber armor
Lens coating of FMC
Water-proof, fog-proof, shock-proof and nitrogen filled
Features meet the standards and requirements of GJB1240, GJB150 and MIL-STD810
Field angle:7.5°
Field of view at 1000m:132m
Field of view at 1000yds:396ft
Exit pupil:7.1mm
Eye-relief:25.5mm
Minimum focus distance:5m
Resolution(center):≤4.5°
Relative brightness:50.4
Twilight factor:18.7
Size:210*78*195
Weight:1500g
Focus system:individual
Prism type:porro
Prism glass material:Bak4