How about some minimalistic look for your watch? Let the hour and minute hand vanish and even the twelve numbers! Now when everything has disappeared from the watch face, how do we ascertain the time? Here comes the o’ clock that achieves this feat using two flat disks with cuts whose positioning determines the hour and the minute.
From the illustrations below, the concept can be understood. This o’clock has been designed by Ana Kremenelieva. You might even like to look at light o’ clock where instead of regular hands light has been utilized to show the time.