We used this image to communicate to the factory what kind of form factor (shape), button layout, and screen size we were looking for.
There is a bit of debate on the team whether or not we should use a more traditional watch-style layout with a round face oriented from left to right instead of oriented along the wrist.
The more we make it look like a watch, the more difficult it will be to make a gender neutral device. With that said, our target demographic of users have been wearing wrist watches their entire lives, so they might be more comfortable with something that looks more traditional.
If you have any ideas or preferences, please feel free to let us know!