TEKTON 5941 Digital Tire Gauge, 100 PSI Lighted nozzle and display screen for ultimate visibility in low light or at night Digital display instantly and clearly shows exact reading, eliminating the guesswork of analog gauges Nozzle seals to valve stem for quick and accurate measurements Simple push button control turns unit on, selects the desired range, and automatically shuts off after 30 seconds to save the batteries Ergonomic design comfortably fits hand and features a soft, non-slip surface for sure grip (1) CR2032 3V Lithium Coin Cell, (3) LR44 1.5V Button Cells (All Included)