Now you can stop wondering how fast your motor is running. This simple to install tachometer/Hourmeter shows total hours on motor when engine is not running and displays engine RPM automatically when engine is running. Simply wrap wire around spark plug wire and attach ground wire to hook up. The hour meter makes a great way to keep up with maintenance intervals

• Displays Engine RPM 200-9990
• Displays hours when not running
• Displays engine RPM when running
• 5 Year battery life
• Simple 5 minute install
• Engine hours are not resetable
• Sealed weatherproof