1. Ultra-long battery life: Equipped with a 6000mAh battery, the air pump can work without connecting to a charging cable. The battery capacity ensures long - term use. It supports fast charging through the Type - C charging port. 2. Multi - functional design: The LED light on the top of the portable air compressor can transform into an emergency power supply in the dark. There are a USB - C input port and a USB - A output port on the top, which can provide reverse power supply and serve as an emergency power source for mobile phones. 3. Compact and portable: The size of the air pump is only 5 x 7.5 x 17.5 cm. It is very compact and won't cause any burden when carried, allowing you to inflate anytime and anywhere. 4. LED digital display: The air pump is equipped with an LED data display. After connecting the air nozzle, it will automatically and accurately set the tire pressure without errors. It will automatically stop when fully charged, so you don't need to constantly check the tire pressure gauge and can accurately see the tire pressure. 5. Four tire pressure detection units: The air compressor pressure gauge can accurately display the pressure using 4 units (PSI, BAR, and KG/CM²). When the inflation reaches the preset value, the air pump will automatically stop inflating, thus avoiding over - inflation.