The Universal Display Corporation (UDC) have themselves a wrist-worn, flexible OLED prototype that they built with support from the US Department of Defense.
As you can see, the 4-inch screen looks a bit too unwieldy for practical use in the field, but the UDC believes that this technology will find a home with our military forces some time in the not to distant future (and in our cellphones and other devices beyond that). In the meantime, they plan to bring a working model to CES, so at least a few lucky attendees will get a taste of our OLED future. [OLED Display]
https://gizmodo.com/samsung-demonstrates-folding-oled-cellphone-vindicates-5097377