Symbiotic smartwatch displays

An electronic display device configured to present content to a user, the device comprising:

• a user interface subsystem including one or more actuator elements configured to receive input from the user;
• an emissive display element having a first set of render speeds or update rates;
• a non-emissive display element having a second set of render speeds or update rates different from the first set of render speeds or update rates;
• and
• one or more processors operatively coupled to the user interface subsystem, the emissive display element and the non-emissive display element, the one or more processors being configured to:
• determine at least one of an update rate or a refresh rate for each of a plurality of content elements to be presented to the user;
• evaluate one or more display criteria including power consumption or visual quality;
• for a first subset of the content elements having respective update rates or refresh rates above a threshold value or meeting at least one of the display criteria, control the emissive display element to render the first subset of the content elements for presentation to the user;
• and
• for a second subset of content elements having respective update rates or refresh rates below the threshold value or not meeting at least one of the display criteria, control the non-emissive display element to render the second subset of the content elements for presentation to the user, so that the first and second subsets of content elements are presented concurrently to the user.