A variety of improvements to portable electronic devices are disclosed, particularly electronic devices designed for use in and around water. The improvements include a more secure interface jack, improved waterproofing techniques, improved battery stability, and improved device functionality. One or more of the disclosed improvements may be incorporated into a variety of portable electronic devices.

A thermoelectric watch including a thermoelectric generator; a voltage booster connected to the thermoelectric generator; 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 including 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.

A thermoelectric watch including a thermoelectric generator; a voltage booster connected to the thermoelectric generator; 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 including 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.

A wearable device includes: a wristband, including a first section of wristband with a first interface and a second section of wristband with a second interface; and a main body on the wristband and electrically connected to the first interface and the second interface, wherein, when the first interface is connected to a power supply and the second interface is not connected to a first terminal device, the main body is charged through the power supply. By providing two interfaces on the wristband, in a state in which one interface is connected to the power supply, and the other interface is not connected to the terminal device, self-charging can be realized without a dedicated charging base, and charging is more convenient.

A wearable device includes: a wristband, including a first section of wristband with a first interface and a second section of wristband with a second interface; and a main body on the wristband and electrically connected to the first interface and the second interface, wherein, when the first interface is connected to a power supply and the second interface is not connected to a first terminal device, the main body is charged through the power supply. By providing two interfaces on the wristband, in a state in which one interface is connected to the power supply, and the other interface is not connected to the terminal device, self-charging can be realized without a dedicated charging base, and charging is more convenient.

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.

An electronic watch of the present disclosure includes a power generation device having a rotating weight rotating about a rotary shaft, and configured to convert mechanical energy obtained by rotation of the rotating weight into electrical energy, a clocking device configured to clock time, and an antenna disposed on an inner side in a radial direction of the rotating weight than a rotational trajectory of an outer peripheral edge of the rotating weight in plan view viewed from an axial direction of the rotary shaft, and configured to be capable of receiving a long wave standard radio wave, wherein the rotating weight has an opening portion or a notch portion disposed at a position that enables the rotating weight to overlap with the antenna in plan view, and does not cover the entire antenna in plan view regardless of a rotational position.

An electronic watch of the present disclosure includes a power generation device having a rotating weight rotating about a rotary shaft, and configured to convert mechanical energy obtained by rotation of the rotating weight into electrical energy, a clocking device configured to clock time, and an antenna disposed on an inner side in a radial direction of the rotating weight than a rotational trajectory of an outer peripheral edge of the rotating weight in plan view viewed from an axial direction of the rotary shaft, and configured to be capable of receiving a long wave standard radio wave, wherein the rotating weight has an opening portion or a notch portion disposed at a position that enables the rotating weight to overlap with the antenna in plan view, and does not cover the entire antenna in plan view regardless of a rotational position.

An electronically controlled mechanical watch includes a mechanical energy source, a power generator including a rotor driven by the mechanical energy source, a capacitor configured to be chargeable and accumulate electrical energy generated by the power generator, and a crystal oscillation circuit including a crystal oscillator and an oscillation circuit and configured to stop oscillating when a voltage of the capacitor falls below an oscillation stop voltage and to start oscillating when the voltage exceeds an oscillation start voltage higher than the oscillation stop voltage. The watch also includes a temperature compensation circuit configured to perform a temperature compensation function operation compensating for variation of a reference signal due to a temperature, a first voltage detection circuit configured to detect that the voltage exceeded a first voltage that is set higher than the oscillation start voltage, and a control circuit configured to stop the temperature compensation function operation of the temperature compensation circuit until the first voltage detection circuit detects that the voltage exceeded the first voltage.

A smart watch includes a watch body and watch straps respectively connected to two sides of the watch body. At least one watch strap includes charging contacts, a USB plug, and cables connected to the charging contacts and the USB plug, and the charging contacts are disposed on a back of the watch strap. Charging terminals configured to cooperate with the charging contacts are disposed on a back of the watch body. The charging contacts and the charging terminals are electrically contacted to charge the smart watch after the watch strap disposed with the USB plug is attach to the back of the watch body.