Japanese watchmaker Tokyoflash Design Studio has released its latest product, the Sudoku Watch, a timepiece that not only provides you with the time but also with the brain-stimulating, numbers-based game people around the world have grown to love.
Combining a stylish watch and a mind-exerciser in one, the Sudoku Watch is perfect for long commutes or simply when you have nothing else to do. It features the traditional 9-by-9 Sudoku grid on an LCD display screen, but the catch is that the missing numbers needed to solve the puzzle actually indicate the time! If you can't figure out the puzzle, you can (in shame) touch the screen to reveal the missing numbers. Extra features include an alarm, date function and EL backlight.