Based on Tokyoflash’s instructions, the wearer just needs to fill in the empty boxes with the missing numbers and read it left to right to gauge the time. We’re guessing that as the time changes, the rest of the numbers in the boxes changes too which to be honest does not make this a good watch if you need to tell the time in a flash (unless you’re really good at Sudoku).
However despite its seemingly complicated nature, it is a pretty interesting design and would make a great conversational piece. If you’d like to see this watch made, head on over to the source link below and rate the design and give the Tokyoflash Design Studio some feedback on your thoughts!