Accurate tire pressure gauge, automatic stop inflation: Portable air compressor is equipped with an upgraded high-precision chip to ensure accurate tire pressure, LCD screen displays the real-time pressure value and preset value, which is convenient for observation and operation, and tire pump automatically shuts off when it reaches the preset value, without the risk of over-inflation NOTE: When the air tire pump is connected to the tire, the current pressure will be displayed and you will need to select the desired mode to inflate. 4 Modes, Simple Operation: The portable tire inflator for car has 4 units (PSI, KPA, BAR, KG/CM) and 4 preset inflation modes (car, motorcycle, bicycle, ball) that can be switched at any time. The custom mode can also set the pressure value according to the inflation object to meet the inflation needs of most products Multifunctional Cordless Tire Inflator: It can not only be used as a portable air compressor to inflate tires, but also a multifunctional emergency tool. It has an LED light on the top, which can be used to inflate or change tires in the dark. The 5V/2A USB output port can be used as an emergency power supply for electronic devices Portable Air Compressor for Car Tires: The cordless bike tire pump adopts a compact cordless design, the size is 3.1"L*2.1"W*7.6"H, small size, easy to carry and store, perfect for emergencies, outdoor activities and camping trips, making it a must-have for travel and home life