... position-setting with tripod,which makes Wake2 Bering-85 to a new level on technical innovation,also its more convenient for users. Its ... 197/60 118/36Focus range,yards0.25 to infinity 1.0 to infinity 1.0 to infinityEye relief distance,mm 15Dioper setting,D ... )Estimated battery life without IR,hour Up to 60Operating temperature, -30°to+45°Storage temperature, 0°to+60° Water instrusion Meet IPX4 rating ...