Describe Mini size. This mini pump slides into a pocket or bike bag. Perfect for cyclists, hikers and daily commuters. LED display and smart turn off digital screen display real-time tire pressure and your preset goals. Once the required PSI is reached, the pump will automatically turn off. Maximum 100 psi allows for fast, safe and controlled inflation. Multifunction: Bicycle tire pump has multiple interfaces, suitable for bicycles, motorcycles, balls, etc. It can set pressure values ​​according to inflation objects, making them easy to operate. Free Hand: When expanding the mini bike air pump, it is inflated by a pump connected by an air tube, so you can let go of your hands and since it is made of plastic, it won't burn your hands when used, which is a must-have item for your daily life and travel. High performance: equipped with high-precision chips and high-power motors, built-in rechargeable batteries, the car tire air pump is safe and effective, and does not require external power when working, and only needs to be fully charged in advance, providing a safe and reliable purpose. Package includes: a set of mini inflatable pumps