support SD card,U-disk 3.5mm audio jack FM ,1.5"speaker,3W external Li battery,500mAh/DC 5V ... of the following device: A,memory card,such as SD/MMC card,U-Disk,etc B,mobile device,such ... SG-339 mini portable multimedia speakerinterface:USB,SD card,3.5mm stereo jacksupport resource:U-disk,MMC/ ... . accessories:function1 pcs 3.5mm audio cable connect external sound source such as PC,phone,MP3 player.etc1 pcs ...