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.

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.

An electronic timepiece prevents the internal time from shifting because time information for correcting the internal time cannot be received. The electronic timepiece includes: a timekeeper; a receiver; an operating device; an automatic reception controller; a time adjuster; and a reception setter configured to selectively set a first automatic reception prohibition mode that prohibits operation of the automatic reception controller and is cancelled by a single operation of the operating device, and a second automatic reception prohibition mode that prohibits operation of the automatic reception controller and is cancelled by a specific operation of the operating device that is different from the operation that cancels the first automatic reception prohibition mode.

A computer-implemented method for improved determination of state of health (SoH) of a battery of a device can include determining that the device is in a charging state such that a charge of the battery is increased over a charge procedure; determining that a state of charge (SoC) metric of the battery reported by a battery gauge system has increased by a fixed SoC interval; determining a charge time interval over which the SoC metric of the battery has increased by the fixed SoC interval; and determining a SoH metric indicative of the SoH of the battery based at least in part on the charge time interval; wherein determining the SoH metric is based at least in part on a known relationship between a reference time interval representative of time required to increase a reference battery at full SoH by the fixed SoC interval and the charge time interval.

A timepiece having multiple springs while reducing the plane size of the movement. The timepiece has a first barrel including a first barrel arbor, a first spring, and a first barrel wheel; and a second barrel including a second barrel arbor, a second spring, and a second barrel wheel, disposed to a position not superimposed with the first barrel in a plan view from the axial direction of the first barrel arbor and the second barrel arbor, and having rotation of the first barrel transferred thereto; a planetary gear mechanism having a display pivot that turns in a first direction when rotation of the first ratchet wheel that turns in unison with the first barrel arbor is transferred, and turns in a second direction opposite the first direction when rotation of the second barrel wheel is transferred, and is disposed to a position not superimposed with the first barrel and the second barrel in plan view; and a power reserve wheel train including multiple wheels that transfer rotation of the first ratchet wheel to the planetary gear mechanism, and having one of the multiple wheels axially supported by the second barrel arbor.

A method for controlling an electronic watch includes a first pointing hand, a first motor configured to move the first pointing hand, a second pointing hand, a second motor configured to move the second pointing hand, a pressure sensor configured to measure pressure, and a mode indication unit configured to indicate a mode, and when detecting start of diving based on a pressure measured by the pressure sensor, control is performed on the first motor and the second motor to indicate with the first pointing hand a water depth estimated from the pressure and indicate with the second pointing hand a time period of diving for which timing is started after detecting the start of diving, and when the water depth is indicated with the first pointing hand, with a plurality of modes with different indication resolutions being provided, the selected mode is indicated on the mode indication unit.

A power reserve indicator mechanism is for displaying the power reserve of an energy storage of a timepiece movement, powered in a winding phase by an input wheel actuated by a winding-stem or an automatic winding mechanism of the movement, or by an external winder, and arranged to restore energy in the unwinding phase via an output wheel. The power reserve indicator mechanism includes at least one display wheel set indirectly driven by the input wheel or by the output wheel, via a differential mechanism of which the input wheel and the output wheel constitute two inputs, and, at a single output, an output wheel set directly or indirectly driving the display wheel set.

A power reserve indicator mechanism is for displaying the power reserve of an energy storage of a timepiece movement, powered in a winding phase by an input wheel actuated by a winding-stem or an automatic winding mechanism of the movement, or by an external winder, and arranged to restore energy in the unwinding phase via an output wheel. The power reserve indicator mechanism includes at least one display wheel set indirectly driven by the input wheel or by the output wheel, via a differential mechanism of which the input wheel and the output wheel constitute two inputs, and, at a single output, an output wheel set directly or indirectly driving the display wheel set.

A watch includes an hour hand and a minute hand, a dial including a plurality of time graduations indicating time by being pointed by the hour hand and the minute hand, and a dial plate including a graduation for predetermined information different from the time, and supported by a rotary shaft, wherein in plan view from a normal direction of the dial, the rotary shaft overlaps with a pointing graduation, which is one of the time graduations, and the predetermined information is indicated by the graduation of the dial plate in an extension direction of the pointing graduation.

A watch includes an hour hand and a minute hand, a dial including a plurality of time graduations indicating time by being pointed by the hour hand and the minute hand, and a dial plate including a graduation for predetermined information different from the time, and supported by a rotary shaft, wherein in plan view from a normal direction of the dial, the rotary shaft overlaps with a pointing graduation, which is one of the time graduations, and the predetermined information is indicated by the graduation of the dial plate in an extension direction of the pointing graduation.