1.factory support OEM&ODM 2.classic design 3.CE,ISO9000 4.with MP3 player,SD,USB TL-M2018B( with sd/usb,mp3)2.0CH Multimedia SpeakersFrequency Response ... x 200mm x 225mmSatellite Speaker: 140mm x 185mm x 225mm 2.0ch wooden case Multimedia speaker with USB,MP3 Player,SD