I bought a spare tire for my air compressor and am very glad I did. I had the old style where the dial went up and showed me the tire pressure, but sometimes the top got dirty and didn't go all the way up. Thanks to this I don't have to worry about a dial or button popping out instead of digitally increasing the tire pressure. Not only am I getting more accurate readings, but I've found that I no longer under- or over-inflate my tires with this gauge. Batteries were included and even after over a month the batteries are still good and working. Although the screen is a bit dusty, this tire gauge still works the same as when it started. Not to mention the tubing that comes with this gauge isn't cheap and won't rip or tear.