Dakota Digital 3-3/8&Prime, Gauge Cup CUP-3301 High-quality digital instruments for a real custom look High-contrast teal display is easy to read, even in sunlight Microprocessor circuitry provides stable readings Multi-function instrumentation display within a standard 2 1/16 diameter or 3 3/8 diameter housing Contain several display options including volt meter, oil pressure, water or oil temperature and fuel level or air pressure readings