This portable air compressor allows you to switch between cordless and power supply modes. The Type-C cable serves for charging, while the cigarette lighter is utilized to power the air pump, not to charge it. The high-capacity rechargeable Lithium Ion battery can inflate up to 4 car tires on a single charge. With a 9.84 Ft DC 12V power cord, you can easily power it by connecting it to the car, never worry about running out of power again.Equipped with an upgraded high-precision chip, the air compressor for car tires can detect tire pressure accurately. The dual large LCD display shows real-time pressure and preset values. The pump will automatically shut off when reaching the preset value to avoid over-inflation. And the last preset pressure value can be memorized for easy use next time.This portable tire inflator features 4 preset inflation modes (cars, bicycles, motorcycles and balls), 4 pressure measurement units (Bar, Psi, Kpa, Kg/cm²), and 1 smart mode, making it convenient for beginners. The smart mode allows you to set pressure values (up to 150Psi) according to the inflation object, while the preset modes are designed to meet various inflation needs. It's suitable for car tires with a width ≤245mm and pressure ≤50 Psi.In just 1 minute, tire pump for car portable can inflate a tire from 25 to 36 PSI. With a maximum pressure of 150 PSI and airflow of 32L/Min, it’s perfect for inflating cars, bicycles, motorcycles, balls, and other inflatables. If you need to fully inflate a car tire, it only takes 5 minutes.On the top of the tire inflator is a LED light, it’s convenient for you to inflate in the dark. With 3 lighting modes (always bright, SOS, strobe), it's helpful for roadside emergencies and nighttime use. This product also comes with an Emergency Escape Hammer that shatters car windows in case of an emergency. Plus, with a 5V/3A USB-C output port, it can also be used as an emergency power supply.