Here is a smart kit that connects your boat to your iOS/Android device. The Mercury VesselView Mobile lets you track fuel usage, engine temperature, battery charge, RPM, and other important data points on your phone. You can connect up to 4 engines.
More gadgets like this: here
The device lets you monitor true engine running hours and perform maintenance at the right time.
**Disclaimer: Our posts may feature aff links. As an Amazon Associate, we earn from qualifying purchases. Please read our disclaimer on how we fund this site.