Works exactly as expected: put the mp3 files on the tf card, play them on the device.I used it for ice skating when I don't want to carry a phone. It's light and the sound quality is good. The interface is a little clunky, but it's easy enough to get used to. You can build playlists (tediously) on the device, but it also supports playing by folders which can accomplish the same thing.The device itself is a nice value, but the software could be a little better.
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