Model  No  Quantity  1 piece(s) per pack  Color  Black  Material  Aluminum alloy  Laser Wavelength  635~680nm  Laser Power  Less than 5mW  Specification  21mm universal broad gauge; Water and vibration resistant  Packing List  1 x Laser scope     2 x GPA76 button cells     1 x English user manual     1 x Hex wrench<img src="http://112.74.112.28/down/products/176212/176212_000.jpg">