Bought by chance, wanted to get one with an analogue sensor. After receiving these, I will save them. If we were to rate it in monetary terms I would give it 3-4 stars. Comparing the costs, it gets 5 stars. Pros: + The part that attaches to the valve stem attaches very quickly and has a strong hold. You don't have to hold it by hand. + Fittings have good o-rings so pipe thread tape was not required. + While it may not be entirely accurate compared to a very expensive sensor, it allows you and your right tire to be at exactly the same pressure. + It lights up and the device turns on automatically when you attach it to the pole or pull the trigger. + The trigger is in a suitable place. Disadvantages: + Cheap plastic under rubber protection. + Need batteries so you can eventually have a dead gauge when you need it. + Cheap Chinese gauges tend to lose accuracy when the battery dies, and they typically use significantly more power when idling.