Bilt Factory Wired Hour Meter / Tachometer This versatile hour meter and tachometer is an essential tool for efficiently tracking maintenance on both 2-stroke and 4-stroke engines. By facilitating the easy recording and display of up to 9,999.9 hours of engine usage, it eliminates any guesswork related to engine maintenance schedules. Its installation process is uncomplicated, offering both a peel-and-stick option and hardware for secure mounting. Accurate engine readings are guaranteed through a simple connection to the spark plug wire. This device not only monitors total running hours but also allows for the checking of engine RPMs. With an internal battery designed to last approximately 6 years under normal conditions, this hour/tach meter is a reliable companion for engine monitoring. Features: Works on any gas engine 2-stroke or 4-stroke Waterproof case Tracks total running hours and displays RPM Can be mounted with provided double sided tape, or hard mount ( sold separately )