Item Features: Specification: 100% brand new with high quality Material: ABS Color: Black Size: Approx.72 x 46 x 20mm (max.) Net Weight: Approx.66g Display: LCD display Voltage: 3V Reading: 9999.9 hours Reading: 99,999 RPM Features: Large LCD Display Tachometer/Hour Meter. Great for Cart Engines operating in the 25,000+ RPM range. Outboads, Quads, Jetskis, Motorcycles and Dirt Bikes. Resetable to Zero Hours. For all spark ignition engines. Splash Proof. Easy Install: Wrap black wire around sparkplug wire - will 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 tachometer reads to 99,999 RPM. Programable 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. Accuracy: 1 minute or 10 RPM, Quartz. Lead Wires: 5 1/2 feet, plenty to work. Includes single shielded wire with two internal leads. One is to be wrapped around a spark plug wire and the other is a ground wire. Voltage Supply: Self Powered with internal battery rated for 35,000 hour of operation. Temperature Range: -4 to 158 Fahrenheit; -20C to 70C. Note: The colors may be a little difference for the different monitor display. Please check as much as possible to make sure the item is the one that you need. Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) Item Package included: 1*Tachometer/Hour Meter