Automatic Electric Ball Pump Electric ball pump is designed with intelligent pressure detection and stop function, just preset the correct ball PSI, press start, once the preset pressure is reached, it will automatically stop inflating. Smart and easy to use. Accurate Pressure Calibration Built-in digital pressure gauge and LCD display, you can preset a very accurate PSI to inflate your ball, then you can get accurate ball pressure level (PSI). Makes inflating the ball easier without wasting time, you can focus on the game instead of the ball ^Fast Ball Pump - Free Your Hands, Save Energy Air Volume Input: 4L/M, just 1 minute to inflate the ball - 2 minute. There's no need to sweat by pushing or pulling those manual ball pumps by hand. Save more energy to beat your opponents Portable and compact design Size: 6.29*1.57*1.57 inches, Weight: 0.55 lbs, it fits in bag, boots or even pocket. Allows you to take this mini pump anywhere you may need to keep your balls inflated. Bright LED light and backlit LCD display make it easy to use the ball pump at night or in dark places High capacity BatteryElectric ball pump with 2000mAh lithium battery, 30 balls at a time, with Micro-USB charging cable, about 120 minutes to fully charge^