POWERFUL & EFFICIENT: Our portable tire inflator for car has a built-in 8000mAh rechargeable battery, which allows you to keep inflating quickly for up to 1-2 hours without cables. The powerful motor delivers up to 150 PSI of pressure, perfect for quick inflation of dirt bikes, cars, motorbikes, bicycles, balls, and other inflatable products. VERSATILE INFLATABILITY OPTIONS: The portable air compressor for car tires with 4 units (PSI, KPA, BAR, KG/CM) and 4 preset inflation modes (car, motorbike, bicycle, ball) can meet the inflation needs of most products, making it a must-have for traveling and home life. The cordless car tire pump can provide 34L/min airflow and can inflate small car tires in 1 minute (27PSI-36PSI). AUTO-OFF FUNCTION: Use the + and - control buttons on the air compressor portable to preset the desired pressure, connect the air hose to the tire, and press the power button. Once the preset pressure is reached, the electric air pump automatically stops inflating the tire, eliminating the need to worry about over-inflation, safe to use. LED DIGITAL DUAL-VALUE DISPLAY: This portable air pump has a built-in high-precision and high-performance chip, which allows you to observe the tire pressure value and preset pressure data in real-time through the upper and lower LED screens, ensuring that every inflation is accurate (the accuracy of the measurement at 0.1BAR is normal). If you have any questions you can always contact our after-sales team for help. PORTABLE DESIGN & LED LIGHT: The top of the small air compressor is equipped with an LED light, which is convenient for you to inflate tires or change tires in the dark, just long press "U" to turn on/off. We also have extra USB-C/USB-A input and output ports, which are an emergency power source for mobile phones and other digital devices. The bike tire pump is compact and comes with a storage bag for easy storage in your car, bike rack, or backpack.