JEGS Pro Digital Tire Gauge has a 2-5/8" face with a large, easy to view, 4 digit (00.00) read-out that has a range of 0-50psi. The readout can be displayed in several formats including PSI, Bar and HG. Powered by a 9-volt battery (included), the display indicates a low battery, letting you know when it is time for a new battery. The 12" hose has a pressure release valve and hardened steel swivel chuck. A protective rubber boot helps keep from being damaged. Includes a foam lined storage case to protect the gauge when not being used. Accurate to within 0.50 lbs. .