TWS earphone assembly capable of selectively executing TES treatment function

A TWS earphone assembly comprising:

• a pair of left and right earphones electrically separated from each other, each of the earphones including a housing and a circuit configuration accommodated in the housing, the circuit configuration comprising a Bluetooth® communication module, memory, a decoder, a digital-to-analog converter, an audio amplifier, a speaker unit, and a controller controlled by a user interface and configured to selectively execute a transcranial electrical stimulation (TES) treatment;
• a frequency generator configured to generate low-frequency signals for TES treatment and a TES signal amplifier configured to amplify the generated low-frequency signals, the frequency generator and the TES signal amplifier being provided in one of the pair of left and right earphones;
• an electrode provided on an outer surface of each housing of the pair of left and right earphones for electrical contact with a skin of a user's ear;
• and
• a pair of female connectors provided in the each housing of the pair of left and right earphones;
• and
• a link cable configured to be electrically and selectively connected to and disconnected from the pair of female connectors,
• wherein, when the link cable is electrically disconnected from the pair of earphones, the pair of earphones are configured to play back audio as TWS earphones, and
• wherein, when the link cable is electrically connected to the pair of earphones, the pair of earphones are configured to conduct the generated low-frequency signals between the electrodes so as to, in response to a user input selecting a first mode for the TES treatment or a second mode for the TES treatment with an audio playback, perform the TES treatment alone or to perform the TES treatment and the audio playback simultaneously.