1.12 V cigarette lighter connected to the cigarette in the car . 2.Confirm the connection correctly, insert the multi-function suction nozzle to the top of the vacuum cleaner and turn on the work switch. 3.Absorb dirt or dust from 30 to 45 degrees. 4.After work, turn off the switch, turn on the vacuum cleaner and dust. 5.Close the front cover again and prepare for the next use.