We purchased this item because we own several automatic watches that will stop running if not worn for a day or two.  This double watch winder does exactly what it is advertised to do and does it without making a sound.  We have it in our bedroom and it stays plugged in an "on" all the time.  We never hear it.  Our watches maintain perfect time when not worn for a few days.  It's a pleasure not to reset the "day/date" feature each time you put on a different watch.  I don't see how anyone who owns more than one automatic watch can do without one of these gadgets.  So glad we made this purchase.