283731 Color Black Brand spike Material Aluminium alloy Quantity 1 Piece Adjustment Graduation Back stop screw Laser Power 5 dB/mW Laser Wavelength 625~660nm Laser Reaching Range 200m Laser Color Red Other Features Powered by 3 x AG13 battery (included); Waterproof and shockproof; With adjustment stop knob for quick adjust the scope's accuracy， wide rail (20mm)， and narrow rail (11mm) Packing List 1 x Gun sight 2 x Wrench