| 摘要 |
<p>The present invention relates to a connectable and expandable earphone. According to the present invention, the connectable and expandable earphone transmits the sound signal delivered from a sound device to head units placed on the ears of a user through a transmission unit, wherein one or more head units are provided so as to allow the transmission unit to be detachably connected thereto, and the transmission unit comprises a main transmission wire which connects the sound device and a first head unit which is any one of the one or more head units so as to transmit the sound signal from the sound device to the first head unit.</p> |
