Knog Plus Free is the first ultra-bright, 100% waterproof and versatile USB charging light. Attach it to your handlebars, fork, or use the integrated clip to secure it to a jersey pocket, backpack strap or bike pannier.Are you more of a runner than a cyclist? No problem. The Light Plus can be used for night lighting. Simply slip it behind your shirt, shorts, socks or headband using the clever integrated clip, and the flashlight ensures visibility for all athletes, day or night. Weight: 12 g Brightness: 40 lm front / 20 lm rear Battery life: 2 / 40 h 5 USB modes Magnetic clamp .