Light & Motion Urban 550 Lumens: 550 Runtime: High-1:30 Med-3:00 Low-6:00 Flash-18:00 Weight 112 gr The Urban line uses a single cell Li-ion cell carefully packaged inside the light. These products feature a new battery charge indicator that reliably reports the charge status so you know when to re-fuel includes USB cable and helmet mount tool-less mounting works on bars or stems Lightweight and Compact