cylinder &portable mini MP3 speaker with big sound 1.Portable, high quality 2.Strong function 3.Beautiful model function featuresPortable, high quality al-alloy shell, fashion, beautiful, eleganceSupports MP3, WMA format music files, double decodingsupport connect external Music playersBuilt-in FM FM radio (optional)Support Micro SD/TF memory card, infinite capacitySupport management card ...