The new standard in urban bike lighting the usb rechargeable volt 100 delivers a constant 100 lumen output to see by and flashes at an ultravisible 150 lumen when you really need to be noticed usb rechargeable front light with up to 150 lumen output integrated li ion battery side visibility usb recharge flextight handlebar bracket modes high low flash runtimes 230 hrs depending on mode weight 65g