... connection 2.SD USB FM Remote 3.warrantee 1-3 years SY-HM-763F(3.1) Home Theatre system Advantages of ... card reader,full function remote control SPEAKERRated voltage:15w ,Center 15w,surround :12wResistance:4Ω,center:4Ω,surround:4ΩDriving unit:Front :1*3''+1*1 ... '', center: 1*3''+1*1'',surround: 1*3''+1*1'',Frequency range: Front : 200Hz-20Hz center: ...