Ultra Bright to Keep Your Safe: 260 degree wide angle visual design provides more visibility than other lights.what's more , The COB lamp beads produces super bright light to enhance maximum visibility on the road compatible with your cycling safety.Multiple Modes & Waterproof: The bicycle light is red & blue, lasting up to 2-4 hours depending on the mode you use. Weather tight design ensures all condition use.USB Rechargeable: Stop Wasting Your Money and Never Buy Batteries. The bicycle tail light charges from your computer or any devices with USB port.Only takes 2 hours to fully charge.Easy to Install: Horizontal or Vertical Mounting, 360 rotation mountable cycling blinker installs and flexible detaches around any handlebars, seat post, frame or helmet in seconds with no tools required.The Bicycle LED Light is brilliant illumination widely used compatible with mountain bike headlight, taillight, helmets, backpacks, belts, scooters, baby stroller, walking stick, wheelchairs.It is SUPER BRIGHT, LIGHTWEIGHT, WATERPROOF,ENERGY SAVING, DURABLE Enjoy cycling with a peace of mind.Ultra Bright & 5 Modes:Red Brightness (last up to 2 hours)Red Strobe (last up to 4 hours)Blue Brightness (last up to 2 hours)Blue Strobe (last up to 4 hours)Red & Blue Strobe (last up to 3 hours)USB Rechargeable:Charges from your computer or any devices with a USB portBuilt in high quality rechargeable lithium batteryJust needs 2 hours to fully chargeEASY TO USE:Find the device with a USB port (laptops, computers or your cell phone plug is perfect) and plug it in compatible with 2 hours or less.StepWe've included everything, even split-second setup instructions. Simply connect it to your bike frame, compatible withk, seat post (including most Aero tubes), handlebar, saddle bar, seat stay, bracket, rims or helmet. It fits snugly and staysputChoose the lighting setting that's right compatible with you, then switch at any time.Enjoy knowing you can safely bicycle in any lighting condition compatible with 4 - 12 hours.If you want to use it somewhere else,unclip and move to the next location. Includes multiple sized silicone rings compatible with the perfect fitcolour: red+Blue lightMaterial: plasticsize: 8.7 x 2 x 3cmPackage Contents:6 x Bicycle Tail Light6 x Rubber Strap6 x USB Cable6 x User ManualOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.