1. Skid-proof Design2. Reflector: Convex Lens3. Internal wiring applies the high efficient booster circuit、 working voltage is wide and can utilize the batteries in the largest extent.4. Waterproofing design、 "O" ring sealed.5. Battery type: 1 x 18650 3.7v Battery or 3 AAA batteries (Not Include)6. Super Bright、 blinding Effect7. Adjustable focus range for different usage8. Switch :Tail-cap press ON/OFF9. Clip for convenience carry10. Suitable for Self Safety、 hunting、 cycling、 climbing、 camping and outdoor activity etc.11. External Dimension: 35mm(Head)x25mm (Body)x 135mm(Length)Specifications:1.Color: Black2.Model of LED: CREE XM-L3.Material: Aluminum alloy4. Max output Lumen: 4000 Lumens5.3-mode adjustable Brightness、High/Low/StrobePackage Included:1 x Flashlight