Hour Tach Meter Surface Mounted Inductive Meters provide what today's power-sports user need and expect from hour meters and hour tach meters. Multifunction meters with Flash Alert have become the most cost effective method of performing service. Knowing what to service and when, is the key to a successful preventative maintenance program for your motorcycle, ATV, PWC, Boat and Generator. Meter displays can be read at all times (whether power is applied or not)! There is no clicking like mechanical meters. Installation is easy with simple patented one wire hook-up. Solid state electronics, modern LCD, superb environmental durability and enhanced functionality offer today's leading OEM's the best of all possibilities without sacrifice to performance, operation, or budget. Encapsulated exopy case is water resistant. Hour Meter Track the Service Life of Your Vehicle - oil changes, valve, adjustments, spark plugs, etc... Easy Installation - peel & stick, no wiring neccessary, or attach with enclosed hardware No Battery Required - connects to spark plug wire Works Any Gas engine Records and Displays to 9,999.9 hours Hour glass symbol appears and flashes on/off to indicate counting time Automatic Roll over Resolution 0.1 hour 100% epoxy encapsulated casing resists water Warranty one yearHour Tach Meter Has the same features as hour meter plus tachometer feature Works on any gas engine up to 2 cylinders and 8000 rpm Firing pattern 1 spark = 1rpm Resolution 10RPMs Maximum RPMs 8000 Suitable for all single and twin, two or four cycle gasoline engines operation within specified tachometer firing pattern