This hi-tech flashlight is one of the brightest flashlights you will find with its state of the art CREE LED diode, the brightest long range LED on the market. 150 lumen white CREE LED and 51 lumen red LED operated with a separate switch. Brilliant White CREE diode lasts forever, no need to replace bulbs. Barrel switch for red LED function. Runtime: 3 hours. 1" weapon mountable barrel. Momentary or full On/Off tail cap button. Includes anti-roll tail cap, pocket clip, wrist lanyard, holster, and 3 AAA batteries. Weight with batteries: .34lb (0.15kg). All performance ratings have been independently lab tested to ANSI FL1 Standards.