Xiaomi Inflatable Bao 1S Car Air Pump Portable Electric Car Bicycle Tire Inflator Feature Optimizing the performance of the movement, it can fill up about 2 car tires with zero air pressure, or fill up about 8 car tires with insufficient air pressure. Using a high-precision alloy die-casting cylinder, it takes about 20 seconds to pressurize from Opsi to 150psi, which meets the high air pressure required for mountain bike air pressure shock absorbers and road bike tires. The air pressure sensor of the digital chip improves the tire pressure detection accuracy to 1psi*, and the error is smaller. Set the air pressure value according to the required pressure before inflating, and it will stop automatically after inflating. The pressure value can be memorized, and repeated pumping does not require repeated settings. Preset 5 inflation modes, limit the default range of air pressure, and prevent excessive inflation. Built-in lithium battery, inflatable without external power supply, get rid of redundant power cords. The small body only weighs about 480g*, with a simple shape, you can travel lightly. Put it in the bag, put it at home, put it in the car, it is beautiful and does not take up space. Specifications: Product size: about 124x71x45. 3mm (bare size, excluding trachea) Interface type: USB-C Inflation pressure range: 0. 2-10. 3bar/3-150psi Working temperature: charging 0~45, discharging -10~45 Storage temperature: -10~45 Battery capacity: 2000mAh (14. 8 Wh) Working noise: the noise is less than 80dB at a distance of 1 meter Input parameters: 5V=2A Charging time: less than 3 hours