PromethFire XZ-FL012 1200 Lumen Tactical LED Flashlight ( Battery Not Included ) Producing 1,200 lumens of brilliant illumination, CREE L2 high-powered led the PromethFire XZ-FL012 tactical flashlight is the newest and brightest addition to this series New advanced computer circuit driver board, long life, switch allows user selection of one of five different programs, high, middle, low,strobe,sos Similar to US military rifle design, stepped cooling rings, better heat dissipation effect,Shock-proof, non-slip handle. Runs on 2 x 26650 Rechargeable Li-ion Battery or 2*18650 rechargeable Li-ion battery ( not included) A long body and aluminum waterproof casing which can be used as a weapon for emergency situations,an useful device for outdoor activities.