OK, first impression, this is my first day of ownership, if you don't like reading instructions, you can easily understand everything. It easily inflates the tires of my electric scooter and electric bike. The only problem I have is that the tire pressure gauge seems to be a bit off. When you first turn it on it will read in psi as soon as you start pumping air, an example of a sensor surge. Connect the pump to the tire to read 26psi, then I inflate to 30psi, then the gauge reads 32. I would definitely take another tire gauge just to be sure. In addition, it works by inflating tires. I just wish they had a quick release hose adapter with them, but you can't have them all.