Works well. At first I thought it was a problem as there was a loud buzzing sound when I tried to use it while it was charging. I wrote to support about this and they asked for a short video showing the problem. When I moved the speaker and the tablet it was connected to for better lighting to capture the video, the buzzing stopped! Looks like it was some kind of intervention. The instructions printed on the side of the box are not complete. It does not indicate that the charging indicator will change from red to blue after fully charged. worth your money.
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