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We listen to music whenever we are tired of daily life and want to take a break.
How about your mp3 player and earphone which give you the pleasures of music?
Does the tangled line bother you?
Yo-yo mp3 player makes you feel fun and entertained with rhythmic use while listening to music.
KOOKMIN UNIVERSITY
Seoul, South Korea
kookmin university
gyeonggi-do, South Korea
heemin Ko