Insert the power cord of the portable air compressor into the 12V power socket of the car, then press the inflation nozzle into the tire valve, and press the switch to start inflation. It takes about 3 minutes to fully fill the tires. Maximum pressure range: 120psi; Continuous working time: Working at 35psi for 30 minutes. Simply press a button to easily inflate car tires.Bright and LED lights for easy night use. The tire inflator can be used in conjunction with a 12 volt automotive accessory socket, featuring a built-in dial gauge (0-100 pounds per square inch), air-cooled motor, bright LED lights, and a 10 foot long power cord. Very suitable for car, truck, SUV, motorcycle tires. Includes three nozzle attachments for sports balls, air cushions, pool toys, and other inflatable toys. It can also be used as an air pump for bicycles.