... ,built-in Lin-ion 4.USB cable Features: This multimedia portable speaker can link to MP3, MP4, Notebook, CD, DVD, Mobile ... connection, support: MP3/MP4, computer, music mobile & iPod, etc3)Stereo sound design, excellent ultra-low sound4)High-efficiency digital Amplifier, enjoy ... music 5)Music styles of Classic/Jazz/Pop/Rock/Bass6)Portable speaker, a very good friend for tours & outdoor activities.7) ...