Again just a guess, but it looks similar to a retro fitted multi function remote control for a car radio. I adapted similar from a Sony radio to use on my yacht.

You can see it in this image below right hand side of chart plotter.

[Linked Image]

Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone