Trail Tech TTO Tach / Hour Meter Gauge Kit The Trail Tech TTO Tach / Hour Meter, equipped with a pickup wire, accurately displays engine run time and RPM for any spark-plug-powered machinery. The innovative pickup wire effortlessly wraps around your spark plug wire, capturing pulses per revolution with precision. For versatile mounting options, it features a small Surface Mount digital gauge that secures easily onto any flat surface using the included adhesive strip, or opt for a more permanent fixture with M4 screws (not supplied). Additionally, the compact Panel Mount digital gauge requires a cutout of 1.5 L x 1 W, with a depth of 0.68 behind the surface, to integrate seamlessly within any flat panel. Features: Total run time: 0 to 9999.9 hours Ride run time Maintenance reminder setting Engine speed: 0 to 19,990 RPM Internal battery: 5 year lifespan Screen size: 1 L x 0.5 W (24mm L x 14mm W) Body dimensions: 1.75 L x 1.22 W x 0.7 D (45mm L x 31mm W x 17mm D)