176167 Model No Quantity 1 piece(s) per pack Color Black Material Aluminum alloy Laser Wavelength 635~680nm Laser Power Less than 5mW Laser Reaching Range 200m Specification 11mm or 21mm narrow / broad gauge; Water and vibration resistant Packing List 1 x Gun Scope 1 x CR2 battery 1 x Switch 2 x Hex wrenches 1 x Chinese / English user manual