Torque is too quiet. You have to go very slowly and pay very close attention, then you will feel more than you hear. I'm sticking with it because it works, but I wish they would make them louder. Basically, there was a learning curve on my end. After a year of use, torque settings are down about 10-12 pounds across the board. I will contact the company to find out how the calibration process goes and update my review afterwards. This key is used weekly. Sometimes daily and sometimes I don't use it for a month, but on average it's weekly. I assume torque wrenches will keep their calibration for well over a year. Most I've had can last 3-5 years before needing calibration.
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