Bluetooth works great, FM radio is ok and USB stick playback is great but be aware that it's not music plays back copies copied with Apple products .M4A format. If the USB stick won't play, connect it to your computer and make sure it's not an Apple Music .M4A file or a copy. If so, convert to .MP3 and your flash drive will play. This is not in the instructions and there is no contact information to get help from this manufacturer. I found a useful video on Youtube that helped me convert to MP3. Like right now.
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