A time tracking system includes a stopwatch having a waterproof housing, the stopwatch further having a control system with a transceiver for communication; a first sensor secured to a first end of a swimming lane, the first sensor to communicate with the stopwatch via the transceiver; the control system is to track swimming speed based off of communication with the first sensor.

A time tracking system includes a stopwatch having a waterproof housing, the stopwatch further having a control system with a transceiver for communication; a first sensor secured to a first end of a swimming lane, the first sensor to communicate with the stopwatch via the transceiver; the control system is to track swimming speed based off of communication with the first sensor.

A control method and an electronic device are provided. The electronic device includes: a housing having an accommodating space, where the housing is provided with a recess around the accommodating space, and a first electrode and a second electrode are disposed on a bottom surface of the recess; and a bezel, where at least one part of the bezel is disposed in the recess. When the bezel is located at a first position of the recess, the first electrode and the second electrode are conductively connected; and when the bezel is located at a second position of the recess, the first electrode and the second electrode are conductively disconnected.

A control method and an electronic device are provided. The electronic device includes: a housing having an accommodating space, where the housing is provided with a recess around the accommodating space, and a first electrode and a second electrode are disposed on a bottom surface of the recess; and a bezel, where at least one part of the bezel is disposed in the recess. When the bezel is located at a first position of the recess, the first electrode and the second electrode are conductively connected; and when the bezel is located at a second position of the recess, the first electrode and the second electrode are conductively disconnected.

According to certain embodiments, an electronic device comprises: a housing; a protrusion from a side surface of the housing including a first window and a second window; a first board disposed inside the housing; a second board connected to one surface of the first board; a first sensor circuit mounted on a first surface of the second board, disposed in the protrusion, and spaced apart from and under the first window; and a second sensor circuit mounted on a second surface of the second board facing in a direction opposite to the first surface of the second board, disposed in the protrusion, and spaced apart from and above the second window.

A sensor includes: an electrostatic-capacity-type sensor electrode layer having a plurality of sensing units; a reference electrode layer opposed to one main face of the sensor electrode layer; and a deformable layer disposed between the reference electrode layer and the sensor electrode layer, the deformable layer being to deform elastically due to application of pressure. The deformable layer is recessed between the sensing units or discontinuous between the sensing units. The reference electrode layer has a shaped portion between the sensing units.

The present disclosure may provide a connector, an electronic apparatus, a wearable apparatus and an assembly method. The connector may include: a main body and a mating member connected to the main body. An inclined face may be provided on one end of the mating member away from the main body, and a recess may be defined between the inclined face and the main body. The mating member may be configured to be inserted into a mating site of the electronic apparatus; the inclined face may be configured to push an engaging member of the electronic apparatus to move on the inclined face while the mating member is being inserted into the mating site; when the mating member is inserted into the mating site and arrives at a predefined location, the engaging member may be restored and accommodated in the recess to engage with the connector.

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.

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.

Disclosed herein is a traditional metal watch adapted into a smartwatch wherein the smartwatch comprises a circuit module placed within a metal case cover. An antenna on the circuit module is connected to hands of smartwatch through a first metal component thereby providing an electrical path for signals to and from the circuit module. The hands of the smartwatch function as an antenna for transmitting control signals to an external electronic device wherein the control signals are operable to execute one or more functions on the external electronic device.