Tire Inflator with Persistent Power: This tire inflator comes with a built-in 4000mA 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 common cordless inflators on the market, with a 35% increase in power. It can inflate 12 car tires or 30 racing bike tires, away from the problem of low power. [Portable Design] The cordless tire inflator machine adopts a compact cordless design and is compact in size. It is equipped with a storage bag for easy storage in cars, bicycle racks or backpacks and is very suitable for inflating during travel or at home. The cordless tire inflator includes multiple accessories and is a must-have product for drivers, cyclists and adventurers Large screen and automatic shutdown design: The large-size LED screen displays real-time pressure values and preset values, making it easy to check the tire pressure status. The automatic shutdown design can