1. Product parameters: - Color: Black - Size: 73.5*46.7*20 (mm) - Material: Plastic 2. Packaging list: - 1 * Motorcycle tachometer battery - Motorcycle tachometer hour meter 3. The tachometer and hour meter of off - road motorcycles can have their built - in batteries replaced. 4. The replaceable built - in battery is suitable for the tachometers of 2 - cylinder engines and scooter tachometers, with a designed service life of 35,000 hours. 5. Marine tachometers and engine hour meters, off - road motorcycle hour meters will display the engine speed and operating hours. 6. The digital rpm tachometer (dual - cylinder tachometer) can read up to 99,999 rpm. Four - stroke snowmobile tachometers, two - stroke motorcycles, and marine ATV engine tachometers can track the service life of your vehicle, such as for oil changes, valve adjustments, spark plug replacements, etc. 7. The universal induction hour meter can also be used as an ATV tachometer, powered parachute tachometer, engine hour meter, motorcycle hour meter, induction tachometer, induction motorcycle tachometer, moped tachometer, go - kart tachometer, chainsaw tachometer, gasoline engine tachometer, etc. 8. Lawn tractor hour meters and motorcycle hour meters are easy to install. Wired hour meters are simple to use, while digital minute tachometers can easily complete the work. 9. The induction waterproof off - road motorcycle hour meter is suitable for all two - stroke and four - stroke gasoline engines. 10. The induction tachometer can reset the total hours and maintenance time.