Card MP3 player/ promotional gifts/ super thin credit card MP3 player, 1GB, 2GB, 4GB, 8GB, 16GB, 32GB portable card mp3 player Card MP3 player/ ... promotional gifts/ super thin credit card MP3 player, 1GB, 2GB, 4GB, 8GB, ... 16GB, 32GB1. Media format:MP3, WMA, TXT, WAV2 ...