Review on Sony WIC400/L Wireless Behind-Neck In-Ear Headphones, Blue by Achara Chamniprasart ᠌

When paired with the phone for the first time, the headphones seem to be connected and the computer does not see them through the bluetooth adapter. In order for them to become visible to everyone again, they need to be reset, as it were. 1. Turn off, 2. Then press and hold the button even after the blue indicator starts flashing. After a couple of seconds, a new sound is heard, the indicator starts flashing red and blue, after which the headphones are detected. Apparently this is a complete reset of the headphones. I had such a case, most likely the headphones were captured by some device (there are only a cloud of phones and tablets at home). And a normal search turned up nothing.