1. Product parameters: - Color: Black - Size: 73.5*46.7*20 (mm) - Material: Plastic 2. Packing list: - 1 * Motorcycle Tachometer Battery 3. Motorcycle Tachometer Hour Meter and Motocross Tachometer have the ability to replace the built - in battery. The replaceable internal battery for 2 - cylinder engine tachometer and scooter tachometer is designed for 35,000 operating hours. 4. Boat tachometer and engine hour meter, motocross hour meter can display engine speed and operating hours. 5. Digital rpm tachometer, two - cylinder tachometer can read up to 99,999 rpm. 6. Four - stroke snowmobile tachometer, 2 - stroke motorcycle, marine ATV engine tachometer tracks the service life of your vehicle, such as changes of oil, valves, adjustment, spark plugs, etc. 7. The universal induction hour meter can also be used as an ATV tachometer, paramotor tachometer, engine hour meter, motorcycle hour meter, induction tachometer, induction motorcycle tachometer, moped tachometer, go - kart tachometer, chainsaw tachometer, gasoline engine tachometer, etc. 8. The lawn tractor hour meter and motorcycle hour meter are easy to install. 9. The wired hour meter is simple and easy to use, while the digital minute tachometer does the job with minimal fuss. 10. The induction waterproof motocross hour meter is suitable for all 2 and 4 stroke gasoline engines. 11. The induction tachometer can reset the total hours and maintenance time.