2- Earphone system with a built-in double sound unit that can turn up sound balance

The present invention relates to an earphone system with two-unit sound balance. In an earphone, the earphone system comprises: a casing having a hollow structure having a snail-like shape with an opened rear face, and including an upper end portion in which a cable is drawn and an upper stepped sur...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	CHAE, SUNG SOO
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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