USB LED Waterproof Rechargeable Ultra Bright Bicycle Tail Lamp Mountain Bike Warning Light with Adjustable Rear Mount & Cable(white/red/blue) Super bright bicycle LED light Chageable lithium polymer battery Charged by USB, automatically cut off power supply upon fully charged 4 modes: long light, slow flash, sudden flash, strobe Package: Package Includes: 1x Bicycle USB Rechargeable Rear Light 1x Mounting base 1x USB cable Line