Prism System : Porro 

Focus System : Individual Focus 

Closed Interpupillary Distance : 56mm 

Open Interpupillary Distance : 74mm 

Weight (Binocular Only) : 600g 

Size (Measurements) : 167X77X120 

Features: 

Highest brightness - better than 95% light transmission, 

100% multi-coated optics Flat-field, distortion-free, high-resolution optics -equally sharp from center to edge 

Maximum eye relief - 8x30 models with eyes relief 11.8mm 

100% Waterproof, O-ring sealed, light alloy housings 

Include a carrying case 

Lifetime limited warranty