Digital Hour Meter/Tachometer and Maintenance Reminder. Battery Replaceable, for Lawn Mower Tractor Generator Marine Outboard ATV

HOUR METER----Contains tachometer, hour meter, service timers. Help you track how many hours you put on your engine. When engine is off, display shows total run time of engine and remains visible. Total hours can reset ; 0.1 hours accuracy MAINTENANCE REMINDER----Programmable maintenance interval service timer(SERVICE ), Countdown tracking service reminder time; When the maintenance time arrives, the service warning icon flashes to remind TACHOMETER----Accurately records your RPMs when the engine is running , Help adjust engine idle; Can be programmed for different engine firing patterns BATTERY REPLACEABLE---- Internal replaceable CR2450 battery , Data retained after battery change. Operation button can be turned off , Data retained after shutdown OTHER ----Easy to install; Contains detailed instructions for use. Waterproof rating: IP65, CE ROHS certification