Feature: 1. 【Accurate Speed Measurement】: The product adopts the clamping line induction design and intelligent chip, which makes the data more stable and lower power to ensure the data is real-time and accurate. It can accurately measure the high speed within 0-30000RPM, suitable for 2-stroke or 4-stroke gasoline engines. 2. 【High Temperature \u0026 Waterproof】: The wire is resistant to 200℃ high temperatures, and the product is waterproof and vibrations-proof, adapting to all kinds of harsh environments, with longer service lifespan and stable working performance. 3. 【Multi-function Display \u0026 Timing Function】: After continuously detecting the engine ignition signal, the main interface displays the current engine speed. LCD display and high reflective panel design ensure the data is still clearly visible under bright light and more convenient to read. Meanwhile, it has a long-time timing function (0-9999.9 hours) to meet the needs of engine maintenance and debugging. 4. 【Replaceable Battery \u0026 Easy to Use】: With a low-voltage design, the product uses a CR2450 button cell, allowing for easy battery replacement and cost savings. It also features a reset button and supports speed mode settings, making it convenient to use. 5. 【Wide Applications】: Widely used in lawn mowers, chainsaws, hedge trimmers, shredders and other garden machinery; rice transplanters, hoeing machines and other agricultural machinery; tampers, grinders, road cutters and other road machinery; motorcycles, go-karts, beach automobiles and other vehicle industries; motorboats, yachts and other marine industries; and other gasoline engine equipment. Specification: Item Type: Tachometer Material: ABS Display: LCD Battery: 1 x button cell (not included) Timming: 0-9999.9H Speed ranges: 100-30000RPM Voltage: 3VDC Induction cable length: 1.00m Item size: 52 x 47 x 19mm / 2.05 x 1.87 x 0.75in. Package List: 1 x Tachometer 1 x Clip Cable 1 x Guideline