Four Feature:1.USB charge:this flashlight can charge for mobile phone，computer，pc，mp3，mp4，mp5 ect，2.Brightest L2 bulb.3.Show the electric quantity4.Heat sink design，safer and convenienceDescription:1.Certification:CCC，CE2.Body Material: high quality 6061T aluminum alloy3.Lumens:4000lm4.Battery suppy: 18650 rechargeable battery(not include the battery)5.Work time:4-6 hours6.Range:300m-600m7.LED Flashlight Lamp Life:100000 Hours8.Light Color:White(Super Bright， blinding Effect)Package list:1 x 10W Cree LED L2 Flashlight(Enjoy your day!Thanks)