KevenAnna USB Rechargeable LED Bike Tail Light,Super Bright Bicycle Tail Light, 6 Light Modes, Waterproof With 2 Wheels Lights USB rechargeable LED bike tail light,Only takes 2 hours to fully charge and can last about 6 hours after a full charge. 6 Modes: Low light, Medium light, Glare,50% flash,100% flash and a STROBE mode,which you can adapt according to the time of the day. Easy installation without involving any tools,With these Bicycle Tail Lights, you can ride your bike in any weather, as they are water proof design. Compact size, high illumination, light weight,wide options of use - can be used on kids' bicycles as a Bike Safety Light, as a Bike Helmet Light, backpack light and so on. Super Bright Bicycle Tail Light ,With two LED flash tire wheel lights as gift.