Quickly air down your tires for better traction before off-road adventures. Deflator function lets you manually deflate for incremental changes, or attach for continuous, rapid tire deflation. Analog gauge provides real-time tire pressure reading.
The tires don't look low, but they feel it. You pop the cap, press the gauge to the valve, and wait for the screen to flash. Pressure's good, or it's not. Either way, now you know. That second could save you a tire or a tow.