SpecificationQuantity: 1 pieceLED transmitter: Cree Q5Mode: 3 modes (high low flash)Lamp life: 10,000 hoursColor: Black / SilverKey: click tail coverLens: Convex LensCase material: durable aircraft grade aluminumBattery: 1x14500 / 1xAA (No battery)Input voltage: 3.6-4.2 VPower: 3 W Features1. This flashlight body is made of high quality aluminum alloy and has a very solid structure2. Built-in wiring applies high-efficiency booster circuit and can use batteries to the greatest extent3. Excellent waterproof, suitable for outdoor environment, except for diving adverse weather conditions4. Focus function that allows the beam to focus.