Mini Speaker with built-in polymer battery & Iphone docking,Aluminum Bassdrum SD card-readable Describe:Compatible with MP3,WMAUSB, ... TF CARD connection supportConnecting your iPOD,iPHone,Ipad,MP3,MP4,CD,DVDFM Radio AUX IN Build in ... 800mAInput:5.0V Mini Speaker with built-in polymer battery & Iphone docking,Aluminum Bassdrum SD card-readable