By using the supplied double side tape, Hour Meter fits to the bike in just a few seconds. By interpreting the vibrations on the frame on which it is applied, Hour Meter detects motor operation by discriminating casual vibrations from those given off by an activated motor. The Hour Meter device is completely waterproof and designed to work even in the most extreme conditions. Hour Meter has two meters: one with the resettable partial count and the other records the total hours of operation. The battery is integrated and guarantees operation for six years