Tire pressure detection automatically stops. Connect the QB003 electric bicycle pump to the valve. The LCD digital screen will display the accurate current pressure value, and then preset the pressure you specify. When the preset value is reached, the tire pump will automatically stop inflating. This smart electric bicycle car tire pump can effectively monitor tire pressure and prevent over-inflation at any time. The multifunctional electric bicycle pump is not only suitable for car pumps, but also for bicycles, motorcycles, balls, swings or other inflatable products. It has 5 inflation modes to choose from: Car/Bicycle/Motorcycle/Balloon/Customized. It includes Schrader valve, Presta valve, ball needle and balloon nozzle, and has 4 optional units: PSI, BAR, KPA and Kg/cm. You can easily carry it anywhere with the storage bag. Powerful Air Compressor for Fast Inflation The QB003 mini air compressor tire inflator has a maximum inflation pressure of 150 PSI/10.3 bar and is equipped with a large-capacity 4500mAh rechargeable lithium battery. It takes about 10 minutes to inflate a car tire, and one full charge can inflate 3 car tires. Once you own this electric bike pump, you will save a lot of time and energy. The emergency LED light power bank has a built-in LED light, suitable for night or emergency use. The electric bicycle pump has 3 lighting modes: white/red LED SOS/white, red and green LED flashing quickly. It also has an extra USB port that can be used as a power bank to charge your phone. You'll never worry about running out of power or being in a dark environment while traveling. Easy to Use Safety Protection QB003 Portable Electric Bike Pump, lightweight, compact and non-slip design, easy to use. This is a super useful portable tire inflator for cars in emergencies. And this car tire inflator is suitable for cars, bicycles, motorcycles, basketballs, footballs, swings, etc., but not suitable for trucks or other large vehicles.