Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It's small but mighty

I don't know what people expect out of a gadget that costs less than twenty bucks. True, the lighter socket plug finally fell apart, but that was after a couple of years of occasional use.I imagine it can be repaired with a little creative soldering, but in any event I have gotten my money's worth out of it.Yes, it vibrates, it's noisy, and it's slow - all of the above - but if you're just maintaining tire pressure from time to time it delivers better performance per dollar than a lot of higher-priced devices. Therefore, I'm giving it four stars.