Easy to Use: This small engine tachometer features a clip for attaching to the spark plug wire. It uses a body-inductive design, allowing operation by placing the sensor near the spark plug wire bundle. Reset Function: This tachometer includes a reset function to reset total operating hours and maintenance time. The hour meter displays up to 10,000 hours before resetting to zero. The RPM meter reads up to 99,999 RPM. Compatibility: Suitable for two-stroke and four-stroke gasoline engines. Designed for use with engines operating within a speed range of 100–30,000 RPM. Energy Saving: Automatically powers down when the engine is not running; display turns off to conserve power. Automatically activates when engine operation is detected. Durability & Design: Waterproof construction. Powered by a built-in battery with low-voltage operation for safety and reliability. 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 production batches, but these do not affect functionality. Package Includes: 1 × Digital Chainsaw Tachometer Kit Note: Color appearance may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.