Surefire X400 Ultra Long Gun WeaponLight w/ Green Laser with 2x Extra Surefire CR123A batteries and Alliance Gadget Keychain Light Max Output: White Light 500 lumens Tactical Runtime: 1.5 hours High Visibility 5mW Class IIIa Green Laser Sight (505nm @ 55us 5mW) WeatherproofO-ring and gasket sealed Includes high-energy 123A batteries with 10-year shelf life