As you can see, the 1.7-inch, 200x320-pixel OLED screen can display different clock faces, some of them even designed to mimic an analog watch.

ENGADGET: Toshiba's concept smartwatch reads your pulse, pulls maps from your phone

Its ultra-bright OLED screen makes the display easily visible in day or nighttime conditions and shows steps, stairs distance, calories, activity minutes, time and trophies.

ENGADGET: Striiv launches $70 Play pedometer to track your athletics without fatiguing your iOS device

At CEATEC JAPAN 2009, Mitsubishi Electric unveiled the world's first prototype model of a large-scale OLED display with a 155-inch screen, developed through utilizing the company's large-scale display technology accumulated from the development of Diamond Vision screens installed at numerous sports stadiums and other public facilities.

ENGADGET: Mitsubishi's huge, modular OLED display set to go on sale worldwide on September 21