Pairing with the Bluetooth "transmitter" is very easy. The sound quality is perfectly fine for audio books - whether I would so enjoy an opera, which is questionable.
When operating the earplug have to look carefully and take good care. The rim of the blue disc lights in different colors and rhythms to indicate different things - for example when loading it lights red. The lighting is quite hard to see. And because the plug has only one button, pressing a button always these different lengths to achieve different things - Example: 3 seconds for switching on and off, 7 seconds, press for coupling ... or was it the other way around? ;) But you get it out already. :)
