Features: Skid-proof Design Reflector: Convex Lens Internal wiring applies the high efficient booster circuit, working voltage is wide and can utilize the batteries in the largest extent. Waterproofing design, "O" ring sealed. Battery type: 1 x 18650 3.7v Battery or 3 AAA batteries (Not Include) Super Bright, blinding Effect Adjustable focus range for different usage Switch :Tail-cap press ON/OFF Clip for convenience carry Suitable for Self Safety, hunting, cycling, climbing, camping and outdoor activity etc. External Dimension: 34mm(Head)x28mm (Body)x 135mm(Length) Specifications: Color: Black Model of LED: CREE XM-L Q5 Material: Aluminum alloy Max output Lumen: 10000 Lumens 3-mode adjustable Brightness,High/Low/Strobe Package Includes: 1 x Flashlight