Try this exercise: Hold your arm so a watch strapped on top of your wrist would be facing toward your eyes for easy viewing of its display. If you have a smartwatch, or any kind of watch, you do this many times a day. Now hold your arm in that position for 30 or 60 minutes to watch an entire TV show. You can take a break during the commercials. Enjoying that? Probably not. With a [smart]watch, you only glance at it a…
Rotation is more comfortable the other direction. The under arm makes a lot more sense for a “smart”watch, or at least a device that requires input