The LE221G is a class IIIa visible green laser aiming device with a coaxial mounted class 2 IR (infrared) laser for use with night vision devices. The LE221G features a grade 5 titanium housing with a quick release Picatinny rail mount. The LE221G is powered by a single CR123 battery which can provide up to 5000 hours of battery life.The rear facing selector switch lets the user select between visible low, visible high, IR low, IR high activation using the included remote pressure switch or turn the unit OFF. The LE221G also includes tactile windage and elevation adjustments for a precision zero and a top mounted activation button.Specifications:ELECTRONIC SPECSPower Source BatteryBattery Type CR123ABattery Life (Hours) Up to modesBrightness Setting Up to modesPHYSICAL SPECSWindow Size N/ADimension (in) 3.43A-1.77A-1.34Weight (oz) 6.88MECHANICAL SPECSHousing Material TitaniumSurface Finish TitaniumAdjustment per Click 0.5 MOAW&E Travel Range A 60 MOAENVIRONMENT SPECSStorage Temperature -40~65Working Temperature -40~51Submersion IPX8Vibration 1000GILLUMINATOR SPECSWhite LED Candela N/ALaser & Illuminator Type Dual LaserWhite LED Output N/AIR Illuminator Class N/AIR Illuminator Output N/AIR Pointer Class IIIBIR Pointer Output 0.1mw(low)/0.7mw(high)Visible Laser Class IIIAVisible Laser Output 1mw(low)/5mw(high)