A world time multi-function watch for providing the local time at any location on earth by entry of the cartesian coordinates of that location through the bezel of the watch or by means of a GPS unit. The bezel is a high resolution input device which enables the cartesian coordinates to be input in increments...http://www.google.de/patents/US5982710?utm_source=gb-gplus-sharePatent US5982710 - Method and apparatus for providing time using cartesian coordinates
