"Item detail: Type: Tiny Tach Digital Hour Meter Material: ABS Color: Black Display: LCD display Screen size: 42 x 12.5mm Voltage: 3V Button type: touch switch Refresh rate: 1s Timing range: 0-99999 hours Maintenance reminder range: 0-9999.9 hours Speed: 0-30000RPM Speed accuracy: 10RPM Timing accuracy: 0.1hours Waterproof rating: IP65 Induction line length: 1.7Meters Size: Approx.73.5 x 47 x 20mm (max.) Net Weight: Approx.80g Apply to: Tiny Tach Digital Hour Meter for Marine Spark Mower Engine Engine Features: Large LCD Display Tachometer/Hour Meter. Great for Cart Engines operating in the 25,000+ RPM range. Outing, quad bikes, jet skis, motorcycles and off-road vehicles. Can be reset to zero hours. For all spark ignition engines. Splash Proof. Easy install. Wrap black wire around sparkplug wire willing to work on most engines. Some engines will require hooking up the white ground wire. This hour meter reads up to 9999.9 hours and then resets to Zero. The speedometer reads to 99,999 RPM. Programmable Maintenance hour setting with Service Icon, a reminder when to change oil or other service. Works on all spark ignition engines by selecting engine type using S1 and S2 buttons. The leads are working enough. Includes a single shielded wire with two internal leads. One is to be wrapped around a spark plug wire and the other is a ground wire. Package Contents: 1 x Speedometer/Hour Meter"