Precise LED Digital Pressure: The large LED screen displays real-time pressure values and preset values, making it easy to read and check tire pressure. The maximum pressure is 150 psi, and the automatic shutoff allows you to inflate intelligently. No more worrying about over-inflating your tires. Protect Your Car Battery: The smart emergency jump starter has a built-in protection system that can automatically activate up to 10 protection functions for your car battery, such as anti-spark, reverse polarity, overcurrent, short-circuit protection, etc. Protect your car battery in all aspects and extend its lifespan. 4+N Smart Mode: This car tire inflator has 4 preset inflation modes (car, bicycle, motorcycle, ball), making it easier for beginners to choose. It also has a memory function. After powering on, simply press "+" or "-" to automatically display the inflation mode and the last set air pressure value. This saves you time and avoids repeatedly adjusting the air pressure.