This flashlight has a simple design and can be easily carried. Super bright CREE LED flashlight and 5-mode design: high, medium, low, flash, SOS. Special reflector design to improve light output efficiency. Made of high-quality aluminum alloy to avoid damage if dropped Waterproof design for life, non-slip and wear-resistant. Comes with a lanyard for easy portability. Zoom in/out Adjust focus: x1, *, x500, make user x2000. Scalable and adjustable focus to illuminate different ranges. Suitable for indoor use and outdoor activities, like camping, fishing, hiking and so on. Product parameters: [appearance color]: black (color can be customized) Bulb used: CREE T6 [Appearance material]: Aviation aluminum, military standard three-level hard anodizing [Switch mode]: Tail push switch [Battery used]: 1*18650 or 3 AAA (not included) [Continuous light-emitting time]: 3-4 hours (depending on the battery and gear position) [packing]: white box, can also be equipped with a gift box [Product Size]: Length: (Retracted: 13.5, Pulled: 15.5) * 3.7cm (head diameter) [Brightness]: 1200 lumens, the effective range of strong light is 500 meters Circuit: Constant current drive circuit, DC-DC. [Gear]: 5 gears