Concept 2 pm4 monitor, this monitor is compatible with all concept 2 models (should you wish to put onto a model c I can change the model type in the menu just ask!) however the monitor arm will need changing on the model c (as it’s to narrow to fit onto the arm, cheap fix just to sand the plastic down or replacement arms are cheap on c2 website) this monitor was standard on the model E and an upgrade option on the model D Any questions please ask
eBay