Sikeo Digital Timer Waterproof Digital Timer with LCD Display Portable Timing Timer for Motorcycle/Boat Motors Countertop -- Install work: Wrap the end of the induction wire around the spark plug tube 5 times, then fix it with cable tie, then insert one end of the induction wire into the groove on the back, find the appropriate position and fix the watch with screws. Features: 1. Brand new and high quality2. Track the life of your car oil changers, valve, adjustment, spark plugs etc.3. Easy to install and stickNo battery needed - connect to the spark plug wire.4. Works on any gas engine and displays up to 9,999.9 hours.5. The hourglass symbol appears and flashes on/off to indicate the counting time.6. Automatic turning.7. Resolution: 0.1 hour 8.100% epoxy housing is resistant to water, shock, stand fire 85 deg; c Specification: Size: 54*35*14mm Net Weight: 52g Package Contents: 1 x Hour Meter 1 x Wire 2 x Screw