3 watt tactical LED light that gives 150 lumen. This compact light is shockproof and due to the o-ring seals, waterproof. The light is switched on either with a button switch placed handy on the rear or with the accompanying pressure switch. The remote pressure switch can easily be detached if not needed. The tactical light has an integrated picatinny/weaver rail mount and fits perfectly under your pistol or on the side of your rifle. The light uses 2 x CR123A type batteries. Light output: 150 lumen.