175290 Model NO Quantity 1 piece(s) per pack Color Black Material Aluminum alloy Laser Wavelength 630-680nm Laser Power Less than 5mW Specification 21mm / 11mm rail for choice， powered by 2 x AG13 batteries (included)， or 1 x CR123A battery (not included) Packing List 1 x Red laser scope 1 x English manual 2 x Hex wrench 2 x AG13 button cells