Knog Plus Free is the first USB charging light that is ultra-bright, 100% waterproof and versatile. Attach it to your handlebars, fork or use the integrated clip to attach it to a jersey pocket, backpack strap or bike bag.Are you more of a runner than a cyclist? That's not a problem. The Light Plus can also be used as a night light. Simply slide it behind your shirt, shorts, socks or headband with the clever integrated clip and the flashlight will ensure that all athletes are visible day and night. Weight: 12 g Brightness: 40 lm front / 20 lm rear Battery life: 2 / 40 h 5 USB modes Magnetic clip .