The twm-850xls xtreme lumens tactical weapon-mounted light uses a cree 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 glass-filled nylon polymer ambidextrous toggle switch on each side of the light to operate the momentary-on and constant-on and strobe lighting modes.The flashlight is waterproof, impact resistant, chemical resistant and is serialized for personal identification.Includes 4 sets of cross-rail inserts (2 inserts each to fit glock, 1913, tsw/99, 90two), 4 cross-rail mounting cap head screws, allen wrench, and 2 cr123 lithium batteries.Material: 6061 T6 AluminumType: Weapon LightOutput: 850 LumensBulb Type: Cree LEDBody Diameter: 1.5"Oal: 3.75"Weight: 5.40 ozBattery: CR-123Proofs: Waterproof, Impact ResistantColor: BlackHead Diameter: 1.20"For Series: GlockRechargeable: NoFilter Color: ClearSwitch Type: Ambidextrous Toggle Switch