I have to save all settings to the ON BOARD MEMORY. We purchased these shoes for my daughters wedding. The case isn’t very big either so if you are going on a long flight or trip these paired with another pair will give you an incredible amount of listening time. by Deb. Despite following the guide to buy bigger, they are bigger still, thankfully there is plenty of adjustment, otherwise I would be returning them. I walked pretty far in these the first two days and got no blisters. Quality not there like years ago cheap design. They are easily adjustable when his feet swell. It was doffecult to install and not comfortable They otherwise had great sound and where reliable.