I had high hopes when I saw this device. But like other reviewers so far, I was totally disappointed. First the hose; This appears in product advertisements that screw onto the tire valve stem. It is not; This is a push latch, so two hands are required to operate. One hand is needed to hold the end of the chuck on the valve stem and the other hand is needed to hold and operate the gauge knobs. After the final leak-free installation, the digital readings should be accurate and consistent. readings too. Thinking this issue might be due to a bad battery, I installed a new one, but the inaccuracy and inconsistency continued. It's almost unbelievable that Slime, who makes decent products, was able to develop and sell this particular sensor.