Abstract: An electronic wristwatch that uses a logic unit (42) to control a time display (50, 54) and has a controller (48) that connects wirelessly to external devices (90) or to the internet (99). An energy harvesting system (25) captures energy created by the user's motion and stores it into a battery (30) or in a capacitor (32), from which it is used to power the logic unit, controller, and wireless. Multiple functioning modes of different energy consumption allow the wristwatch to keep time for more than one hundred days without being worn.

Abstract: An electronic watch having a timekeeper logic unit set to control a display of the time. A controller is in communication with an external device or with internet through a wireless interface of the watch. A mechanical energy harvester system is set to transform mechanical energy deriving from the movements of a wearer to electrical energy. A power manager circuit stores the electrical energy in a battery and/or in a capacitor, and to supply the logic unit, the controller and the wireless interface with energy stored in the battery and/or in the capacitor.