IR 400       400 mWt laser diode utilized in this device produces a narrow strong beam that can reach as far as 300 meters. Adjustable angle of illumination allows either to focus the beam for longer distance viewing or to spread it over a wider observation area. Features Long distance illumination Shockproof body Water resistant Standard batteries Adjustable angle of illumination Can be installed on many Night Vision devices with the help of included mounting system   High quality carrying case is included Compact size Lightweight Variable output power settings       Specifications Type Power, mWatt Wavelength, nm Beam angle, degrees Supply current, mA Power supply, V Type of battery Battery life, hours   IR laser (not eye safe) 400 820 1° - 15° 900 6 2x CR123 2 Size (diameter x length), mm Ø 40x165 Design shock resistant, black, non-reflective paint. Working temperature range, °C 40°- to +55° Weight, g 200