why some q7 Karaoke microphone with USB port ?

why some q7 Karaoke microphone with USB port ?

why some q7 Karaoke microphone with USB port ?

08/04/2017

original tosing q7 bluetooth Karaoke microphone have 3 kind version:1Chinese version without USB port,2Chinese version with USB port,3English version without port.

but the fake tosing q7 bluetooth Karaoke microphone either English with USB port or without USB port. 

at last,it cloud be said high quality product is according the cost.

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