Best selling rechargable the new standard in urban bike lighting the usb rechargeable volt 150xc 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 100lm 2 hrs 30lm 6 hrs 150lm 30 hrs battery auto save low battery indicator light mode