Dimensions:3.15in*1.57in*1.1in(8.4cm*4cm*2.8cm) Wavelength:670mm(Red) Wattege:1.5mv Voltage:3V Divergence Angle<2 Effective Aim Reaching Distance:100m Power Supply:Button Battery(Included) Packing List: 1x Laser Sight 1x English User Manual 2x Stainless Steel Bars 4x Button Batteries