Lightweight and dependable, the Urban 550 packs the power and performance of a race light with the size of a commuter, handlebar light. Three output settings, plus a flash mode, produce a range of light from 200 to 550 lumens. Run times vary from one and a half hours on the high setting (550 lumens), three hours on medium (400 lumens) to six hours on the low setting (200 lumens.) Rubber strap mount takes the hassle out of mounting your light to the handlebar with a simple hex wrench. Lightweight, USB rechargeable Li-ion battery features a unique charge light to indicate battery life, so you know exactly when to recharge. 112 g.