... , m200Diopter Adjustment, D±3Power Supply, V2xAA (3V)Estimated battery life without IR under +20°C/68°F, hour24/70Eye Relief, mm45Operating ... , °C-30° to + 40°/ -22°F to +104°FGrade of water-resistanceIPX4Dimensions, mm307x90x100Weight, kg1,0 Sentinel 2.5X50 Night Vision Scope