A battery holding device includes a battery holding member and a plate. The plate houses the battery holding member. The battery holding member includes a fastener and a battery holder. The fastener is fixed to the plate. The battery holder holds a battery, and is arranged at a position where the battery holder does not contact the plate.

An electromechanical horological movement including an analogue time display device and provided with at least one electromechanical motor, to drive at least one indicator of the analogue time display, and a generator including a rotor and associated with an oscillating mass coaxial with the time display device, this horological movement including a first wheel provided with a shaft, coaxial with said indicator, which is guided in rotation, in a main embodiment, by a fixed cylindrical tube around which is rotatably mounted at least one cannon of the time display device. The first wheel is in meshing relation with the rotor of the generator and is fixedly connected to the oscillating mass, on the side opposite the analogue time display, so that this oscillating mass can rotate the rotor of the generator via the first wheel.

An electromechanical horological movement including an analogue time display device and provided with at least one electromechanical motor, to drive at least one indicator of the analogue time display, and a generator including a rotor and associated with an oscillating mass coaxial with the time display device, this horological movement including a first wheel provided with a shaft, coaxial with said indicator, which is guided in rotation, in a main embodiment, by a fixed cylindrical tube around which is rotatably mounted at least one cannon of the time display device. The first wheel is in meshing relation with the rotor of the generator and is fixedly connected to the oscillating mass, on the side opposite the analogue time display, so that this oscillating mass can rotate the rotor of the generator via the first wheel.

A watch charging assembly 10 has a coil 22, a membrane 24 and a back plate 12. The coil 22 is configured to pass electric current received at a first or second contact pad 27, 28. The membrane 24 is affixed to the coil 22 forming a membrane and coil assembly 20. The back plate 12 has a pair of conductive inserts 30. Each conductive insert 30 is aligned with and contacts each contact pad 27, 28. The back plate 12 with the coil 22 and membrane 24 form the charging assembly 10. The charging assembly 10 is configured to form a bottom or underside or, alternatively, be attached to a bottom or underside of a rechargeable battery operated wristwatch 100 and when worn, the charging assembly 10 receives electric current from the wearer to charge a rechargeable battery of the wristwatch 100. The coil 22 can be a pancake coil.

A watch charging assembly 10 has a coil 22, a membrane 24 and a back plate 12. The coil 22 is configured to pass electric current received at a first or second contact pad 27, 28. The membrane 24 is affixed to the coil 22 forming a membrane and coil assembly 20. The back plate 12 has a pair of conductive inserts 30. Each conductive insert 30 is aligned with and contacts each contact pad 27, 28. The back plate 12 with the coil 22 and membrane 24 form the charging assembly 10. The charging assembly 10 is configured to form a bottom or underside or, alternatively, be attached to a bottom or underside of a rechargeable battery operated wristwatch 100 and when worn, the charging assembly 10 receives electric current from the wearer to charge a rechargeable battery of the wristwatch 100. The coil 22 can be a pancake coil.

There is provided a wearable device, comprising connectors comprising a first connector and a second connector for interfacing with another device and/or a charger; a first switch for connecting the first connector and the second connector to a battery charging circuit of the wearable device; a second switch for connecting the first connector and the second connector to a communication circuit of the wearable device; a control unit configured to: enable an electrical connection between the connectors and the battery charging circuit, when the first switch is closed and the second switch is open; and enable communication with another device for data transfer via the connectors, when the first switch is open and the second switch is closed.

A quick release and connect system that provides battery power for a wearable electronic device and a method for reducing battery charging down time of a wearable electronic device are disclosed. The quick release and connect system that provides battery power for a wearable electronic device and the method for reducing battery charging down time of a wearable electronic device reduces battery charging down time of a wearable electronic device by swapping of attachable-detachable auxiliary components with auxiliary batteries.

A thermoelectric watch including a thermoelectric module including a hot plate and a cold plate connected by semiconductor pillars, wherein the hot plate is thermally connected to the back cover of the watch, the cold plate is thermally connected to the case middle of the watch via a support element with at least two branches, at least two branches have a common end on which is held the cold plate of the thermoelectric module, and at least two branches are flexible to absorb shocks.

A thermoelectric watch including a thermoelectric module including a hot plate and a cold plate connected by semiconductor pillars, wherein the hot plate is thermally connected to the back cover of the watch, the cold plate is thermally connected to the case middle of the watch via a support element with at least two branches, at least two branches have a common end on which is held the cold plate of the thermoelectric module, and at least two branches are flexible to absorb shocks.

A thermoelectric watch includes a thermoelectric generator; a voltage booster connected to the thermoelectric generator, and an energy management circuit connected to the voltage booster and configured to control the charging of at least one energy storage element. The energy management circuit includes an output configured to change from a first logic state to a second logic state when the thermoelectric generator starts generating electrical energy, and to change from the second logic state to the first logic state when the thermoelectric generator finishes generating electrical energy.