Portable USB Rechargeable Bike Bicycle Tail Rear Back Safety Light Lamps white universal
USB rechargeable bicycle taillight and auto cut off when fully charged. High quality internal lithium battery,only need about 2 hours to be fully charged while be used for about 12 hours 4modes:constant,slow flash,explosion lash and flash in order. Super waterproof,make you riding freely regardless of rain. High brightness and energy saving LED.