The iCheckTPMS Automatic Tyre Deflators allows the user to simply screw them on and walk away. This saves time and your knees from having to arduously kneel down and deflate one tyre at a time.
“These work great. Just set the pressure, screw them on and in a couple of minutes you're done. Much easier than doing 1 tyre at a time and bending over the whole time. Accuracy seems good.”