The earliest documented ring watches date from the second half of the 16th century. They emerged from the same technical revolution that produced the first pocket watches — the replacement of the heavy foliot balance with the compact mainspring, which made portable, miniaturized movements physically possible for the first time. The craftsmen who built them worked in Nuremberg, Augsburg, and later London and Paris — cities where the finest instrument makers of the Renaissance concentrated.
These pieces were not made for general circulation. They were commissioned objects — gifts between sovereigns, diplomatic instruments, symbols of technological mastery exchanged among the privileged few who could comprehend what they held. Queen Elizabeth I of England received a ring watch as a gift, its bezel set with diamonds and rubies, the mechanism concealed beneath. Mary Queen of Scots wore one. Rudolf II, Holy Roman Emperor and the era's most obsessive collector of scientific For two centuries, the ring watch was among the most technically demanding objects a European craftsman could produce. Then the pocket watch displaced it. Then the wristwatch displaced the pocket watch. The ring watch retreated — not because it was resolved, but because it was abandoned.