Automatic Electric Ball Pump: Electric ball pump is designed with intelligent pressure detection and stop function, just preset the right ball PSI, pressure to start and it will automatically stop inflating when the preset pressure is reached. Smart and easy to use. Precise pressure adjustment: built-in digital pressure gauge and LCD display, you can preset a very accurate PSI to inflate your ball, and then you can get an accurate level of pressure (PSI) in balls. Makes it much easier to inflate balls without wasting time, you can focus, not on the ball but on the game Fast Ball Pump-Free your hands and save your energy: Air volume input: 4L/M, which finishes inflating a ball at only 1-2 minutes. You don't have to sweat to push or pull the manual ball pumps with your hands. Save more energy to beat your opponent Portable compact design: Size: 6.29*1.57*1.57inch, Weight: 0.55LB, fits in your bag, your boot or even your pocket. Allowing you to take this mini pump with you wherever you may need it to keep your balls inflated. With bright LED lights and backlight LCD screen, it makes it convenient to use the ball pump at night or in dark places.