They turn on automatically and connect with your phone when you take them out of the case and turn off when you put them back in the case. Very good and comfortable jedoch "burmester" im mercedes würde ich als "wow" bewerten . I wore them for 8 hours around the state fair, in the stables, through the dust and the petting zoo and they kept up well. great & comfy; good for walking or the beach! Fits quite conformtably on my feet, will reorder a second pair in the near future. Some said order down. It is sturdy holding 9 bottles and looks great on the counter. Oh and I can go outside with them cuz of the hard bottoms ?????? Very happy! Das ist natürlich etwas übertrieben, aber eine derart klare Übertragung konnte ich bis jetzt noch absolut nirgendwo verzeichnen.