Action replay dash display has a standard tachometer dial face that is backlit for clear viewing under all lighting conditions. It is compatible with all conventional ignition systems and engine types (V-4, V-10). Solid state electronics, replay of all engine parameters, composite case, tough shatter resistant glass, no needle waver. Records up to 15 runs, and up to 2 hours of data. 100 percent waterproof. Provides "on display" recording and playback of a wide variety of parameters. Intelligent alarm system continuously monitors engine condition and instantly informs the driver of any problems through both a warning and alarm lights on the dash. Complete high accuracy sensors, ready wired harness, and comprehensive user manual. SIZE: 7.48" wide x 3.82" tall. Make sure to watch our video for details on how to set up your own dash display.