Review on Smart Portable Electric Ball Pump - Fast Inflation for Football, Basketball, Volleyball & ⚽️ More - Accurate Pressure Gauge, Digital LCD Display - Includes 2 Needles and 1 Nozzle by David Encarnacion

It's so nice when the pressure is normal. Three hints: Works like a pressure gauge. After switching it on, without changing any settings, put it in the bag (or ball) and it will show you the current pressure. The threads in the pump and the threads on the other end of the tubing are the same, so you can insert the needle directly into the pump without using the tubing as shown in the picture I uploaded. The pressure gauge on this pump is accurate to 1/10 lb! This allows you to select your desired air pressure in 1/10 pound increments. (The pump will automatically stop air supply when it reaches the previously selected air pressure.)