The NSR-9746XL is a full-size rechargeable multi-function flashlight that uses an LEDrated at 900 lumens working in conjunction with a high-efficiency deep parabolic reflector to create a usable beam of light rated at 450 meters. The body switch provides momentary or constant-on functionality, a set of user-selectable high, medium or low brightness setting as well as a disorienting strobe. Power comes from a rechargeable Lithium-ion battery. NightStick®, NSR-9746XL, Flashlight, Rechargeable, Series: NSR, LED Bulb, 1 Bulbs, 900/400/100 Lumens, Lithium-ion Battery, 1 Batteries, Black, 6061-T6 Aluminum Housing Material, 12.8 in L Dimensions