Speaker, Audio manufacturer / supplier in China, offering Lucky Tone 6 Zones 720W Matrix Mixer Amplifier with Blue-Tooth/ USB/ Micro SD Card Slot/ Aux Input, Public Address System WiFi Blue-Tooth 6 Channel Matrix Mixer Amplifier with Dynamic Power Sharing, ABS 5 Inch 15W Blue-Tooth Full Range Ceiling Speaker with 1 Active 3 Passive for Smart Home Audio and so on.