1. FDA certificate of 5MW green and 5MW red laser sight 2.Engrave customer LOGO for FREE FEE 3,Using Lifetime 100.000Hours Product name Laser Sight Model NO. INRE-303LS-532 Specification 1,Length: 4.72 inches (120mm)2,Weight: 4.41 ounces (125g)3,Battery Type: One CR123 Lithium4,Tube Diameter: 1 Inches(25.4mm)5,laser colour: Green6,laser wavelength:532nm7,Output Power: 5MW, 10mw, 20MW,30mw8, ...