Sierra 68399P Eclipse Series 3" TachometerSmart white and blue graphics on a black dial background, these very low profile bezels follow the curve of the lens to eliminate water trapping. Features: Instruments available for most outboards, sterndrives and gasoline-powered inboards.; Scratch-resistant domes glass lenses.; Perimeter lighting for excellent readability at night.; U.S. and metric scales, with ISO symbols, where appropriate.; Optional add-on square bezels for modular appearance.; Specifications: Size: 3"; Dial Range: 0-7000 RPM; Voltage: 12 VDC; Current Draw: 0.10-0.15 A; Operating Temperature: -40C to +70C; Ingress Protection: IP 65; Bezel O.D.: 3.78; Housing O.D.: 3.39; Hole Size: 3.43;