Mercury - Speedometer 65 MPH Boat Speed Monitoring Black Face Black Bezel 79-8M6020028. OverviewThis 65-MPH speedometer gives you a steady, no-drama read on how the boat's moving. The needle reacts in a quiet, predictable way when you push the throttle or back off in rougher water. After a few minutes at the helm, it feels like one of those gauges you don't have to think about because it behaves the same every time. It's built for everyday running, not showpieces or gimmicks.. Key Features • Hig