Unique three dimensional dial design gives added depth and style to your custom dash. Features lit LCD odometer - capable of registering one-million miles with two resettable trip odometers. Features metric and imperial scalings for easily relatable readings on applications around the world without the need for mental unit conversions. Modern white LED through-the-dial lighting provides clear visibility during nighttime use. Compatible with most two wire sine wave and three wire hall effect vehicle speed sensors.. Simple push button 2 mile drive calibration. No dip switches!. Reprogram at any time to accommodate changes in gear ratio or wheel and tire combination.