Digital Multi-Functional USB Speaker Colour Flash Mini Speaker ... USB,mobile phones,MP3,MP4 2,With FM Digital Multi-Functional USB Speaker Colour Flash Mini Speaker BS- ... card,USB,mobile phones,MP3,MP42,With FM Digital Multi-functional USB Speaker Operation Manual Detail:1. Charging voltage ... devices plugged in intelligently. 4. Speaker "LINE IN" outlet can be connected by outside 3.5 stereo audio wire ...