The price liked. It was the lowest price compared to other TPMS Relearn Tire Pressure Sensor Reset Activation Tool sellers and manufacturers. I had to hold down the touch button, press it against the tire and move it a few inches away from the tire valve before the car horn would be acknowledged. Comparatively, my neighbor has another brand [OTUAYAUTO EL-50448 Tire Pressure Monitoring Sensor, TPMS Relearn Activation Tool for 2006-2019 GM Series Cars] which came from Revain and was much easier to use. instant feedback detection by simply pressing on the tire next to the tire nipple (without looking for a reaction around the valve stem). I will probably return this item and pay another $2 to buy the OTUAYAUTO EL-50448.