It claims to be an MP4 player, but the only video format it can play isn't even MP4, it's AMR, a Chinese proprietary format used for anime. You can convert your real MP4s if you have the patience to get the software and do the job. To say this is an MP3 and MP4 player is misleading. The sound quality or performance produced by the device is very weak and poor even with the best headphones.
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