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The zipper design allows the wires to be turned into a mini storage bag to carry the earphone. This is a green design as it reduce the selling package as well as it extend the service life of the earphone by protecting it from rubbing and collision.
Also,it becomes a decoration when turned into a mini bag with the stylish color.
Ningbo Institute of Technology, Zhejiang University
Ningbo,Zhejiang Province, China