Bright Eyes Taillight - USB Rechargeable with Extreme Bright COB Technology - 6 Modes (3 Brightness Levels) - No Tools - Install On Bicycle, Helmet, or Clip on Clothing for Safety BRIGHT, BRIGHT BRIGHT!!: You will Love this USB Rechargeable Taillight / Safety Light IPX 7 WATERPROOF RATING: You will be amazed where this can travel! 6 GREAT MODES: 3 Levels of Flash, 3 Levels of Non-Flash. Push Twice to go from one to the other. GIVE TO FRIENDS & FAMILY: Great Gift for Family & Friends who rely on Durability and Safety of their Bike Equipment QUICK CHARGE & ONLY A FEW SECONDS TO MOUNT: Only 2 hours to charge. Lasts 4+ hours on high flash.