This Longacre Semi Pro Digital Tire Gauge is perfect for those who want precision and accuracy in their tire pressure readings. It features an easy-to-read 2 1/2″ face and a hi-flex hose for hard-to-reach tires. With a .1 PSI reading accuracy of .5%, this gauge will provide reliable readings. It also features an air pressure release button, an external gauge bumper, and a user switchable metric option. Plus, two user replaceable AAA batteries are included.