(English) A new concept from the Tokyoflash Design Studio.
Quite simply, the watch face is a game of Sudoku. The missing numbers need to be solved to read the time.
The display is LCD & features would include date, alarm, EL backlight. The touch screen can be used to reveal the answers.
For people who enjoy puzzles & particularly Sudoku, its a great way to keep your brain stimulated during the day.