Easy to Use: This small engine tachometer is equipped with a clip; simply attach the clip to the spark wire. The inductive body design allows the cable to operate on the bundle of spark plugs. Reset Function at Zero Hour: This upgraded RPM gauge tachometer features a reset function for total hours and maintenance time. The hour meter reads up to 10,000 hours and then returns to zero. The RPM meter can read up to 99,999 RPM. Tachometer Hour Meter: The inductive tachometer is suitable for any two-stroke or four-stroke gasoline engine and is suitable for cart engines with speeds up to 30,000 RPM. Measuring speed range (RPM): 100 to 30,000 RPM. Energy Saving: When the gasoline engine is not running, the tachometer automatically saves energy and the display turns off. When the gasoline engine is in operation, the tachometer activates automatically. Wide Applications: This tachometer for small engines is weatherproof and durable. It features a built-in battery with long-lasting power and low voltage protection. Widely used on chainsaws, brush cutters, generators, lawn mowers, RVs, ATVs, dirt bikes, motocross vehicles, boats, tractors, and small gasoline engines. Colour: As Shown Material: ABS Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Package Contents: 1 x Digital Chainsaw Tachometer kit. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement accuracy follows industry standards.