Mini Speaker with USB Input: 1. it can connect ... support USB, SD card 3. with button to control Mini Speaker with USB Input: Product ParameterDecoderXZG2008Remote Control InputUSB,HOST, ... holePower inUSB,DC power supply.FormatMP3,layer1-3Stereo AudioBASS , CLASSIC, ROCK, JAZSSButtonPLAY, VOL+,VOL-, NEXT, PREV. EQ.IndicatorLED light. ... price will be reviewed. XZG-AP15 Portable MP3 Mini Speaker Sound Box