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This earphone is designed for listening music together with friends and your love.
Although currently use Y jack for this situation, it require to bring every moment when you need and is easy to lost.
Strengthening this weakness, the shape of 'two in one(1+1=1)' is simple capsule form. Its cover opened on the side when it needs to use.
PUKYONG NATIONAL UNIVERSITY
BUSAN, South Korea
Kim hyung jin Jo chun kyung Yoon min ji Min byung kyu