Best selling rechargable The new standard in urban bike lighting. The USB (Universal Serial Bus) rechargeable Volt 150xc delivers a constant 100 lumen output to see by & flashes at an ultravisible 150 lumen when you really need to be noticed!• USB (Universal Serial Bus) rechargeable front light with up to 150 lumen output• Integrated Li-ion battery• Side visibility• USB (Universal Serial Bus) recharge• Flextight handlebar bracket• Modes: High / Low / Flash• Runtimes: 100lm: 2 hrs, 30lm: 6 hrs. 150lm: 30 hrs• Battery auto save• Low battery indicator• Light mode memory• Weight 42g