... 3T1535S(A/B)SPK-3T1535P(A/B)2way speaker boxActiveActiveActiveActiveActivewoofer15"15"15"15"15"magnet40OZ50OZ50OZ60OZ60OZvoice coil50mm KSV50mm KSV60mm KSV75mm KSV75mm KSVtweeter34mm Ti.Diap.Driver34mm ... 50/60HzAC110/220V,50/60HzfunctionMP3 screen USB,SD,FMMP3 screen USB,SD,FMMP3 screen USB,SD,FM MP3 screen USB,SD,FM shipping ... ,Echo(E)Bluetooth(B0,Echo(E) Speaker Box(SPK-15'' Active Speaker T type)