Defurhome USB Bike Light Set, 650mAh Rechargeable Battery Super Bright Bicycle Light, Bike Lights Front and Back, Waterproof

4 Light Mode Options and Discharge Time of Full-charging Head Light: 3.5hr (full brightness) ,10hrs (half brightness), 10.5hrs (slow flashing), 10hrs (fast flashing) Tail Light: 2.5hr (full brightness) ,9hrs (half brightness), 9.5hrs (slow flashing), 9hrs (fast flashing) How to Charge Attach the micro USB cable to the Bike light's micro USB input port Insert the other end of the cable into eith...