Power Requirement: 1 x CR123A battery(Without)<br />    Wave Length:532nm    <br />Length:120mm    Head Diameter: 2.8cm    <br />Tail Diameter: 2.3cm    Color: black    Light source: 5 milliwatts red/green light 2 mm    Materials: damselfly brass， shell with high quality aluminum. Waterproof seismic.    Range; About 1000 meters    Work time: 10000hours    Luminous exitance: less than 2.0mm    Power: DC3V    Working temperature: -10~65    Note: Ban eyes look straight into the light， avoid to cause damage， and even lead to blindness!      <br />   Package included <br />    <br />    1 x Green Laser sight   <br /> 1 x Metal 20mm Picatinny Rail Mount  Rifle <br />1 Barrel Clamp Mount   <br /> 1 x Switch button   <br /> 1 x Pressure Pad Switch and 8type mount  <br />  1 x Screw Driver