Plug portable air compressor power cable into the car’s 12V power outlet, then press the inflation nozzle into the tire valve,set the pressure value required by the tire and press the switch to start inflating. The air compressor pump will automatically shut off when reaching desired tire pressure. With maximum pressure 150 PSI and air flow 35L/min. Much more effective and faster than traditional pump. Built-in accurate tire pressure gauge. The air compressor pump has a 10ft power cord and inflatable adaptors( 4 additional nozzles) allowing to reach all tires of your car, bike, motor, ATV, compact or midsize Sedan, SUV, air mattress, inflatable boats, balls and other inflatables(but not support big Truck or Motor Lorry).