Realm RTG-01 Realm High Precision Digital Tire Pressure Gauge Lighted pressure valve, led backlight for ultimate visibility in low light or at night Individual switch to control digital screen, more humanization Digital display instantly and clearly shows exact reading, eliminating the guesswork of analog gauges Ergonomic design comfortably fits hand and features a soft , non-slip surface for sure grip Considerate design, love ring design to hang for convenient and considerate