Planet Bike Spok 50 Light Set. Features: Compact and versatile fast-mounting lights that can be attached to helmet, seatpost, bars, and many other places Dust and water resistance rated to IP54 standard Side cutouts provide 270 degrees of visibility Up to 22 hours run time. Steady, Courtesy, and Superflash modes Includes: rubber strap mount compatible with almost all bars and seatposts and USB charger cable Specs: Model Package:Spoke 50 USB Set Run Time:up to 22 hrs Color:white/black/red Weight:25g