TireMinder High Precision Digital Truck and RV Gauge with Replaceable AAA Batteries and 5 Year Warranty +/- 1 PSI Precision from 10-150 PSI Replaceable "AAA" Batteries (Included) Interchangeable Heads (Straight & 45) Features High Quality All Metal Construction, "No Sweat" Custom Grip, Front Facing Flashlight and Green LED Backlight 5 Year Warranty