KNOG Blinder Mob the Face Bicycle Head Light/Tail Light Twinpack LEDS- Surface Mount (SMT) LED designed to provide maximum brightness level for up to 90% of the battery burn time for each mode. 100% WATERPROOF- The Blinder MOB is IP67 Tested and 100% waterproof against all elements INTEGRATED USB PLUG- Designed to be exposed to the elements, and then some. LIGHT MODES- Steady high, steady low, strobe, fancy flash, eco flash. BIKE ATTACHMENT- Tool-less removable silicone straps for bars/posts 22 - 35mm+ diameter. Fits Aero & Oversize bars /po