Updated review: Don't be fooled by the word "battery" in the name - after 3-4 uses the pressure gauge does not drop to the lower limit after pressing the valve. Compared with two other pressure gauges and a pressure gauge on the pump - now the readings are inaccurate. Spoken not long ago and with no possibility of return. This thing is built to a quality level sufficient to work properly for a few uses, and then crap?! Disappointing. I would happily spend a few bucks more for a product that isn't that cheap. Original Review: Nice push button release valve so you can reset the gauge to zero. The fitting on the valve works quite well. However, I want it to read above 60psi. would recommend.