Light and Motion Urban 300 Commuter Light Lumens: 300 Runtime: High-2:00 Med-4:00 Low-8:00 Weight 108 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