Bought and used for live streaming, worked the first 10 times I used it then just stopped working. Contacted GoPro and they sent me a replacement which was nice but it came in a bag unpackaged and did not work. Waiting to see if they'll send another replacement. Disappointed at the quality given the price.
I have tested it today. Itworks, however its almost size of the camera itself, needs a special placement, the price is horrendous for such a simple device.