Garbage. So I bought a pressure gauge in the parking lot to check the tires. Firstly, this thing is very easy to turn off when checking the pressure. Or switch from psi to bar. Second, you have to hold it down for a second or two to get a reading. Third, even if you slowly count to three and make sure you don't hear any air leaks, you can do this three times and you'll get three different pressures. Almost gave two stars because the light is helpful for checking tires in the dark. Too bad it'sβ¦