LED technology - 50,000 + hours LED life Ambidextrous toggle switch Momentary or constant-on flashlight Sharp focused beam for distance illumination Glass-filled nylon polymer toggle switch Beam distance rated at 245 meters Waterproof Impact & chemical resistant 2 CR123 batteries (included) The TWM-850XL Xtreme Lumens Tactical Weapon-Mounted Light uses an LED rated 850 lumens working in conjunction with a high-efficiency deep parabolic reflector to create a usable beam of light rated at 245 meters. This weapon light features a unique and completely ambidextrous dual-dependent toggle switch on each side of the light to operate the momentary-on and constant-on lighting modes. The housing of the TWM-850XL is constructed from aircraft-grade 6061-T6 aluminum with a glass-filled nylon polymer battery door and toggle switches.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }