Portable air pump. Small size, light weight, novel appearance, display screen and other advantages. At the same time, it has a built-in high-precision air pressure sensor, and adopts five user-friendly and safe air pressure setting operation interfaces. The interactive interface is: ball gear, , motorcycle gear, car gear, custom gear (2-150PSI). The user adjusts to the corresponding gear to inflate the inflatable object. When the air pressure reaches the system preset air pressure value, the air pump will automatically stop inflating, providing a safe and reliable for users who are not familiar with the air pressure value setting. 5 operation buttons, ( long press the button to turn on/off, short press to start/stop, "+" and "-" keys to adjust the addition and subtraction of air pressure, short press of the U key to switch units, long press for the first time is a long light , long press the second time is the sos flashing light, long press the third time is to turn off the light, button control mode switch) Voltage: 12V battery capacity: 2500mAHx2 Material: metal+plastic colour: black Package Contents: 1 x 170mm insulated American thread braided pipe 1 x Presta valve 1 x ball needle 1 x TYPE-C charging cable 1 x gas nozzle 1 x portable air pump 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.