1.Multiple functions:this is a magic microphone +bluetooth speaker, you can k song and record a song than play your song !2.Easy to operate:no need any driver, you can connect bluetooth sing without wire in any time any where3.Excellent sound:achieve real low noise and high fidelity, voice clear, delicate4.Support K song APP:WS858 support android and ios, support all K song APPSpecification:Output Power: 5WFrequency : 100Hz~10KHzMax Sound Pressure Level: >115db 1KHz TDH