Description 1. Using the latest CREE XM-L T6 LED, brightness up to 1000LM, Service life up to 100,000 hours. 2. Internal wiring applies constant current output, working range is wide, and can utilize the batteries in the largest extent. 3. Five modes with one button - strong light, medium light, weak light, blink light and SOS light for your choice. 4. Aluminum alloy casing and skidproof design, durable and comfortable 5. Improved deep smooth shaped reflecting cup, increase floodlight effect, aluminum vacuum coating 6. Ideal for mountain climbing, camping, hiking, forest exploring, caves exploring. Also widely used at home like repairing or finding small thing Specifications: 1. Condition: new 2. Light Color: White 3. LED quantity: 1pcs 4. LED bulb lifespan: 100000 hours 5. Luminous flux: 1000LM 6. Power by: 1 x 18650 3.7V battery 7. 5 Modes: High - Mid - Low - Strobe - SOS 8. Maximum range:150-200 m 9. Material: Aluminum alloy(Body), Lens(Glass) 10. Dimensions: 5.9 inch/15cm(Length) 1.75 inch/4.55cm (Head Diameter) 1.1inch/2.75cm (Body Diameter) 11. Body color: black 12. Weight: 101g /3.67oz Please advise: Please never over-charger or over-discharge the 18650 batteries, which means when the brightness of the flashlight is going down clearly but not totally dark, it is the time to charge it, or the battery will be over-discharged and it will be broken or short-circuit when you charge it the next time.The indicator light of adapter will be red when it is charging and being green when it is finished.