... devices:Mobile Phone,MP3, MP4,TF Card, SD Card,DC player, U flash disk .be recharge ... .exrenal battery zlm-N930 USB/SD/TF card portable digital mini speaker Specification: 1 ... Support double decoding(mp3/WMA), USB-host and Micro SD- Supply HIFI sound quality, low power dissipation - ... Support by connecting with U disk and inserting Micro SD card, MP3 format music - PC, laptop, computer, ...