Tested on basketballs and soccer balls - proved to be excellent pumping with a bang. Checked on the car by setting 2.2 ATM. Enough for all 4 wheels - from 0. Ate 30% of the charge. In general, a very convenient thing I recommend. Although it looks very flimsy. But reliability in terms of its functionality (inflating) confirmed Some pros: Lightweight, compact, most importantly mobile and easy to use. Self-shutdown upon reaching the result (previously set values) Got cons: The lack of -language instructions - although it is intuitive and understandable.