1). Portable speaker; 2). USB 2.0; 3). Built-in speaker: 2*3W; 4). Support SD, MMC card; 5). Lithium battery, ... USB, adaptor. 1. Portable speaker;2. Metal case;3. Memory card slot: SD, MMC;4. USB ... 2.0;5. Audio support: MP3, WMA, WAV;6. Built-in speaker: 2 ... cable, manual, line-in cable, adaptor, gift box. Metal case portable speaker