The next generation in instrumentation has arrived. Longacre Racing products is proud to introduce the all-new SMi™ Elite Waterproof Tachometer. Engineered for wet and dirty environments, the SMi™ Elite Waterproof Tachometer provides the absolute best in waterproof sealing. These elite tachometers provide the most precise measurements on the market with unmatched resistance to vibration, heat, and moisture. Manufactured with IP-66 certified methods to be waterproof; dust tight and safe against powerful water jets. • New waterproof design eliminates the need to remove tachometers before you wash your car. Gauge is 2-5/8" in diameter. • LED backlit numbers and illuminated pointers. • Compact lightweight design. • Improved larger digital readout. • Will recall with ignition turned off. • 100 lap average low and high rpm recall. • Works with most cylinder combinations. • Works with 2 stroke or 4 stroke engines.