I bought 3 of these and we use them every day. MyReview applies to everyone as they all work the same way. I originally wrote that the SD card option doesn't work, but I figured out how! It must be in MP3 format and must not be in any other format (e.g. from iTunes). You cannot control the order of the songs, but you can skip the player. If you set a sleep timer, it works, but it turns off the entire device so it doesn't tell the time or light up. I wish we could still see the time. You also can't just hit the power button to turn it back on - it boots up for a split second and then turns off again. You have to unplug it and plug it back in. It happens to all three. We leave them on all the time so we can see the time. I just bought a barrel adapter and am using the cable that came with it (though not very long). When you turn on the Bluetooth mode, the voice will always announce it loudly. It has excellent sound quality and can be very loud for such a small box. sThe colors are random and don't seem to match the music at all.
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