【Persistent Power Tire Inflator 】This tire inflator comes with a built-in 20000mA rechargeable battery for power supply, eliminating the need to connect to an external power source during use. The inflation speed is three times faster than other ordinary cordless inflators on the market, with a 35% increase in power. It can inflate 12 car tires or 30 Racing bicycle tires, away from the problem of low power.【4+N Inflation Mode】The air compressor has four types of pressure units: PSI, KPA, BAR, and KG/CM ². There are four preset inflation modes: bicycle, motorcycle, car, and ball. The fifth custom mode can also set pressure values based on the inflation object to meet various inflation needs. It is an essential product for daily life and travel.【Multifunctional Air Compressor】In addition to serving as an portable air compressor, it is also a multifunctional emergency tool. It has an LED light at the top that can be used to inflate in the dark, change tires, or warn other vehicles at night. The top also includes a C-type charging port and a 5V/2A USB output port, allowing it to serve as an emergency power source for electronic devices.【Dual Screen Display】The portable air pump built in high-performance chip, it can quickly inflate tires and provide high-speed airflow. Inflate small car tires in less than 1 minute. The large-sized LED display screen displays real-time pressure values and preset values, making it easy to monitor tire pressure status. The automatic shutdown design can also prevent excessive inflation, making it safe to use.