An audio playback device includes an audio playback apparatus and a charging storage box that satisfies placement of the audio playback apparatus, the audio playback apparatus includes a piece of connecting soft rubber, a sound nozzle fixedly connected to a side end portion of the connecting soft rubber, a speaker fixedly mounted inside the sound nozzle, a circuit component housing fixedly mounted at another side end portion of the connecting soft rubber, and a piece of memory metal cooperatively installed in the connecting soft rubber. The present device adopts ear clip type wearing, one end of the sound nozzle is inserted into the ear, the circuit component housing is placed behind the ear, since the soft rubber has a certain elasticity and with the unique shape of the sound nozzle, the audio playback apparatus can be firmly clamped on the ear.

A universal serial bus (USB) cradle includes a USB connector configured to engage the USB cradle with an external device. The USB further includes a cradle base integrated with the USB connector. The cradle base includes a cavity configured to accept an audio device in a docked configuration, and a magnetic connector configured to hold the audio device in a given position and orientation when the audio device is docked with the USB cradle.

There is provided an electronic device including a battery, a first chip, a second chip and a communication bridge connecting the first chip and the second chip. The first chip is used to detect a voltage of the battery to determine a charging current, and to transmit information associated with the charging current to the second chip to cause a charging curve of the second chip to match that of the first chip.

An ear-worn electronic device comprises a housing configured to be worn in, at or about an ear of a wearer, electronic circuitry disposed in or supported by the housing, a controller disposed in the housing and coupled to the electronic circuitry, and a rechargeable power source and charging circuitry respectively disposed in the housing. The charging circuitry is coupled to the controller and comprises first and second charge contacts situated at a wall of the housing. A user-actuatable control is operatively coupled to the controller and comprises a touch sensor coupled to the first and second charge contacts. The touch sensor comprises a threshold detector configured to distinguish between skin contact with the first and second charge contacts and contact between a conductive material more conductive than skin and the first and second charge contacts.

A flexible arm that is configured to be located between and physically and electrically connect an acoustic module of an open-ear headphone to a battery housing of the open-ear headphone. The flexible arm defines an original resting length and position between the acoustic module and the battery housing. The flexible arm includes a flexible printed circuit that extends through the entire original resting length of the flexible arm and comprises a conductor that is configured to carry electrical energy between the acoustic module and the battery housing. A first interface structure is coupled to one of the acoustic module and the battery housing. A flexible material encases at least some of the flexible printed circuit and at least some of the first interface structure.

A mouth piece to transmit sound through vibration may include a front portion and a rear portion, which are connected through a connecting unit with each other to form a U-shaped apparatus. In one embodiment, the mouth piece can be disposed traversing the lower lip. More specifically, the front portion is disposed in front of the lower lip and the rear portion is disposed between the lower lip and the gum behind the lower lip, while the connecting unit is located between the upper lip and lower lip. The mouth piece may further include an extending piece extending from the rear portion into the mouth for the upper tooth and lower tooth to bite on.

An auxiliary device charging case is used to facilitate translation features of a mobile computing device or auxiliary device. A first user, who may be a foreign language speaker, holds the charging case and speaks into the charging case. The charging case communicates the received speech to the mobile computing device, either directly or through the auxiliary device, which translates the received speech into a second language for a second user, who is the owner of the mobile computing device and auxiliary device. The second user may provide input in the second language, such as by speaking or typing into the auxiliary or mobile computing device. The mobile computing device may translate this second input to the first language, and transmit the translated input to the charging case either directly or through the auxiliary device. The charging case may output the translated second input to the first user, such as through a speaker or display screen.

A hearing instrument charger device for charging an individually shaped hearing instrument, includes: a charger casing; a charger power supply within the charger casing; a first charger coil connected to the charger power supply; charger electronics for controlling charging of the hearing instrument; and a holder configured for receiving the hearing instrument, the holder located within the charger casing; wherein the holder for the hearing instrument has a shape that is specific for the individually shaped hearing instrument, such that when the individually shaped hearing instrument is received in the holder, a second charger coil of the individually shaped hearing instrument is in an operative position for receiving charging power from the first charger coil of the hearing instrument charger device.

The present application relates to a split bone conduction earphone including an earphone body, an ear hook and a bone conduction vibrator, a transmission surface of the bone conduction vibrator is provided on the side wall of the earphone body; the ear hook is provided on the earphone body for cooperating with the earphone body to make the transmission surface of the bone conduction vibrator firmly attached to a predetermined position; the earphone body includes a first housing and a second housing; the first housing is provided with an elastic support piece that matches the contour of the human inner ear; the first housing and the second housing form a bone conduction cavity and a battery cavity; only the bone conduction vibrator is installed on the bone conduction cavity, and the battery cavity is installed with a battery to power the bone conduction vibrator.

A power circuit for a wireless earphone includes a first charging terminal, a second charging terminal, a charger, a battery circuit, and a control circuit. The charger is enabled via a voltage across the first charging terminal and the second charging terminal. The battery circuit is connected to the charger. The control circuit is connected to the first charging terminal and the battery circuit. The control circuit is configured to enable or disable with a supply of power from the battery circuit based on a control signal provided by the first charging terminal.