Memory Function and Auto Shutoff - Car tire inflator with pressure memory function. Just set the tire pressure once and you don't need to adjust the tire pressure again the next time you fill the tire with the same pressure. The car tire inflator will start working. It will inflate once the preset tire pressure is set and will automatically shut off when fully inflated. Digital Display and LED Light - The car tire inflator can check the tire pressure in PSI/BAR/KPA/kg/c㎡ and is equipped with an LED light so you can check the tire pressure and inflate in an emergency. Fast Inflation - The maximum inflation pressure of the 12V compressor is 150 psi. The 12V compressor can inflate a normal medium-sized car tire from 0 to 100%. 35 psi in 3 to 5 minutes. Connect the power and press the switch, the pump starts to work. Work.