Product advantages: 1. Low-voltage design, built-in battery, safe and reliable, with a service life of up to five years2. Body induction design, wire can be bound to the spark plug to operate3. Set the speed mode at will, remind the maintenance function, and reset the system with one key4. Applicable models: ordinary cars, miniature cars, off-road vehicles, ordinary racing cars, miniature racing cars, off-road racing carsone: 1. The tachometer is applied to all gasoline engines, with spark plugs2. Inductive design, you only need to bind the connecting wire a few times on the spark plug to work3. Timing range: within 9999.9 hours; speed range: within 15300RPM4. LCD liquid crystal display5. DC low voltage power supply, built-in battery CR2450, DC3.0V6. The speed mode can be set, which can be applied to 2-stroke or 4-stroke gasoline engines7. The tachometer line is about 1.65 meters long, equipped with two , and the English manualtwo: 1. The timer is applied to all gasoline engines with spark plugs2. Inductive design, you only need to bind the connecting wire a few times on the spark plug to work3. The timing range is: less than 9999.9 hours; 4. LCD liquid crystal display5. DC low voltage power supply, built-in battery CR2430, DC3.0V6. The timer line is about 1 meter long, English card, blister packagingProduct Name: Motorcycle speed timer accumulatorMaximum timing range: 9999.9 hours speed range: 9999RPMDisplay screen: LCD liquid crystal displayMaterial: plasticcolour: blackPackage Contents: 1 x TachometerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.