SY-HM-763F(3.1) Home Theatre system 1.High speed USB connection 2.SD USB FM Remote 3.warrantee 1-3 years SY-HM-763F ... (3.1) Home Theatre system Advantages of the home ... :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: 200Hz ...