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I’m not completely sure about the usb reading capabilities, but I can say that this speaker is not loud enough to hear over loud machinery. I detail cars and listen to music out of my sport, and although I use an electric pressure washer, I can barely hear the speaker sometimes.
Sorry, there was a problem. Please try again later.Np, the USB port is for charging your phone/tablet only. The speaker has 100 W of power, it should be loud enough for your use case.
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