Inflating a flat tire took only 3 minutes. I've added photos to verify this, but it works very well. Push the button and put the air plug in the tire, it even locks in place so the valve doesn't move, you don't have to hold it down. It's very helpful for me because I'm having a hard time staying down and it has a number of powers thing on it I don't know how to put the number I just waited for the hoop to fill up. Thank you