This model doesnot require an SD card to operate, making it ready to use right out of the box. Excellent sound quality (COWON audio processing). ✔ COWON D2 MP3 Player (16GB). Why Buy the COWON D2?. COWON players are known for theirhigh-quality audio output, customizable EQ settings, and long battery life, making them a great choice for serious music listeners or collectors of classic MP3 players.
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