Motorcycle speed timer: the digital hour meter tachometer can help you track how many hours you put on your engine, when engine is off, the display shows total run time of engine and remains visible Power is lasting. Low voltage design, built-in battery, safe and reliable This tachometer displays RPM of operation when engine is on. Waterproof design: the inductive hour meter features good waterproof performance, suitable for all 2 stroke and 4 stroke gasoline engines, can reset total hours and maintenance time Application for: this hour meter is suitable for outdoor power equipment, agriculture, construction, machinery, vehicles, boats, motorcycle dirtbike, scooter, lawn mower, garden tractor, riding mower, leaf blower, pressure washer, chainsaw, mower, golf cart and so on PRODUCT DESCRIPTION Chainsaw tachometer gasoline engine mower high speed device digital display pulse speedometer PRODUCT FEATURES: Maintenance debugging / gesture sensing / clip line sensing 1.Non-de