... ,built-in Lin-ion 4.USB cable Features: This subwoofer speaker can link to MP3, MP4, Notebook, CD, DVD, ... 5)Music styles of Classic/Jazz/Pop/Rock/Bass6)Portable speaker, a very good friend for tours & outdoor activities. ... remote control distance: 7m· Speakers Included: 2 x right/left channel speaker· Connector Type: 1 x IPod docking / 1 x audio ... )· Impedance: 8 ohms· Output: RMS: 2*5W subwoofer speaker