From the manufacturer
Pumteck Smart Electric Ball Pump Built-in Digital LCD Display
1.Used by PROFESSIONAL, COLLEGE AND YOUTH sports programs around the world
2.LED digital gauge:You can preset a very accurate PSI, no need worrying about the ball's pressure too high or too low, that you can focus, not on the ball but, on the game.
3.RECHARGEABLE lithium-ion battery: More than 30 ball top-ups on one charge. Individual players will rarely have to charge the ball pump...coaches will be able to inflate all the team balls over weeks of practice. Micro-USB charging cable included.
4.ALL SPORTS BALLS - soccer, football, volleyball, basketball, rugby, water polo, Assie-rules football, handball, etc.
5.PORTABLE AND LIGHTWEIGHT (0.55LB); easily stores safely in a backpack, glovebox, ball bag, or equipment kit.
Specification:
Air Volume: 4L/M
Battery: Lithium battery 2000mAh, 3.7v
MAX Output Air Pressure: 12 PSI
Input: DC 5V 1A(MAX)
Dimension: 6.29*1.57*1.57inch
Weight: 0.55LB
Digital Pressure Gauge and LCD Display
Man's Best Friend
You can preset a very accurate PSI（come with 0.1 PSI), no need worrying about the ball's pressure being too high or too low, that you can focus, not on the ball but, on the game
And This Smart ball pump come with Memory Function ,it will display the last used pressure value at your next time use