I was inspired by an idea from CES 2010 where a mock up of the ring above was made and showcased. It had the same use as my ring, but included a small screen to be able to see who is texting or calling you.
I choose to remove the screen from my ring and instead replace it with buttons, along with a tactile surface to control volume. I did this due to screen would have been too small to read off of and be used as a touch screen.