How many hands does it need to determine the time? Three? Two? No! It turns out that only one is needed. But this hand should be very special. For example, like hand in the watch called One Line, created by designer under nickname Sam. The single line bends depending on the course of time. Its thick end lays on the hour position, the thin end on the minute position. It is planned that these watches will have three color options: pink, silver and white. Also it will be provided by illumination. Unfortunately the watch One Line is just a concept. Hope that in the near future it will become a reality. Painfully good idea!