The twm-350 tactical weapon-mounted light uses a cree led rated 350 lumens working in conjunction with a high-efficiency deep parabolic reflector to create a usable beam of light rated at 215 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 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 Aluminum/AnodizedType: Weapon LightOutput: 350 LumensBulb Type: Cree LEDBody Diameter: 1.5"Oal: 3.75"Weight: 5.40 ozBattery: CR123AProofs: WaterproofColor: BlackHead Diameter: 1.50"For Series: GlockRechargeable: NoSwitch Type: Ambidextrous Toggle Switch