Night Vision Device Magnification 3x Objective Diameter 25mm Weight 145 x 70 x 42mm IR - Illumination Range approx. 60m LCD Brightness Adjustment Brightness can be adjusted by key LCD Brightness default 35% Operating Voltage 3*AA ( High Capacity Alkaline Batteries) IR Viewing range 100m Auto off Yes, after 2 minutes Dimensions L*W*H* 174, 79, 53 Objective Lens 45.00 mm Exit pupil 12mm.