Whirling Windmill LED Bicycle Tail Light 8 Light Modes USB Charge Bike Light Waterproof Safety Warning Seatpost Cycling Light

Cycling is your hobby? Check this item for you to customize your bicycle. Do you wanahavit? Whirling Windmill LED Bicycle Tail Light 8 Light Modes USB Charge Bike Light Waterproof Safety Warning Cycling Seatpost Light Introductions: Turn on or off, Press for longer than 1.5 seconds. Function mode： always bright, 50% bright, fast flash, backward flash, slow flash, forward flash, leaping flash, windmill flash. Product Information: Size： 25mm long, 40mm wide, 40mm high Weight: 23 g (not including installing support) Material： high strength PC material. Battery when ：3.7V 500mA, charging time is 2h. Runtime:  100% steady 3.10h,  50% steady 6.30h,  fast flash 6.20h , backward flash 12.25h,  slow flash 12.10h ,forward flash 12.05h, leaping flash 18h , windmill flash 4h . USB charge coil： 25cm 1A Charging ways： 5V adapter, computer, USB charger