... USB Speaker Colour Flash Mini Speaker BS-95 1,Suppor SD,MMC card,USB,mobile phones,MP3,MP4 2,With FM Digital Multi-Functional USB Speaker ... Colour Flash Mini Speaker BS-951,Suppor SD,MMC card,USB,mobile phones,MP3,MP42,With FM Digital Multi-functional USB Speaker ... Operation Manual Detail:1. Charging voltage: DC 5V 2. Speaker can play MP3 documents ...