Pros: - Uses a AAA battery so doesn't drain like others in cold weather, sensors using CR2032 batteries. Doesn't turn off too quickly like my other sensors so you can add air and not turn it back on to test. It feels reliable, like it will last a while in my tool box. Cons: The power button is easy to nudge, which also toggles the display units. The PSI BAR kPa reading can sometimes be difficult to see. So if you don't notice she's switched, you might fill up your tires. Why are both bar and kPA needed in the first place? Anyone can multiply/divide by 100. Seems a little useless and frustrating to have to switch between 3 displays every time the power button is pressed.