【Digital Display】: The digital display of the portable air compressor displays real-time tire pressure, providing a more accurate and intuitive experience. It avoids pressure reading errors, which are common with dial tire pumps, allowing you to accurately read and monitor tire pressure status even in the dark. 【Setting Method and Function】: This car tire inflator first sets a preset value, once the preset value is reached, the air pump will automatically turn off, no need to monitor the inflation process or worry about overpressure. Inflation Method: Simply start the engine, plug the cigarette lighter into the car's 12V socket, insert the tire, press "+" and "-" to set the desired pressure. 【Portable LED Emergency Light】: Electric tire inflator equipped with a 0.30m long air hose and a 3m long power cord (only for 12V cigarette connections). Ideal for emergency situations, the built-in LED light provides emergency lighting in dark environments so you can comfortably repair your car