Easy to Use: This small engine tachometer features a clip for attaching to the spark plug wire. Inductive design allows operation without direct contact with the engine. Reset Function: Includes a reset function to zero out total operating hours and maintenance time. Hour meter capacity: up to 10,000 hours; RPM meter capacity: up to 99,999 RPM. Compatibility: Suitable for two-stroke and four-stroke gasoline engines. Effective speed range: 100–30,000 RPM. Power Saving: Automatically powers down when the engine is off; activates automatically when the engine runs. Durability & Design: Waterproof construction. Built-in battery with low-voltage operation. Safe and reliable. Applications: Compatible with chain saws, brush cutters, generators, lawn mowers, RVs, ATVs, dirt bikes, motocross bikes, boats, tractors, and other small gasoline engines. Color: As shown Material: ABS Note: Slight variations in appearance or printed text may occur between batches—this does not affect functionality. Package Includes: 1 x Digital Chainsaw Tachometer kit Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.