1. The tachometer is applied to all gasoline engines with spark plugs. 2. Inductive design, you only need to tie the cable a few times on the spark plug to work. 3. Backlight Adjustment,LCD liquid crystal display. 4. clamping line sensing + hand-held sensingdesign, the sensing distance of 3-5cm sensing Signal Better. [Multiple Induction Methods]: The chainsaw tachometer supports clip mount induction and handheld gesture induction, the sensing distance is 3cm-5cm/1.18inch-1.97inch. [RPM Meter and Hour Meter]: Speed range: 0-30000rpm, timing range: 0-99999h. [LCD Display Screen]: The tach gauge speedometer adopts a LCD display screen, the data is clear at a glance and easy to read. [High Performance]: Small engine tachometer, low voltage and low power consumption, has a long standby time, waterproof and shockproof. Product Name:Digital Chainsaw Tachometer Timing range:0-99999H Speed range:0-30000RPM Display mode:LCD The digital chainsaw tachometer is suitable for 2 stroke and 4 stroke engines, suitable for the chain saw, cropper generator, lawn mower, RV, ATV, motocross, boat, tractor, etc. Tips:The picture is a high-resolution rendering. The product may be updated constantly, Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:As Shown Material:ABS Package Contents: 1 * Digital Chainsaw Tachometer(backlight) Only 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.