1)2 in 1 ,car vacuum cleaner with car air compressor 2)ABS or PP plastic housing 3)Voltage:DC12V 4)Air ... 2, insert the 12V cigarette lighter plug in the car cigarette lighter.3, switch to the "ON" position ... pressure to switch to the "OFF" position.4, in a counterclockwise direction will air pump nozzle, loosen, ... blocked, the air does not enter the tire, turn off the power, remove the gas nozzle, do ...