The Playlist+ feature is a bit clunky/confusing how to use it so I'm just using Bluetooth, and that works pretty well, even when I'm doing backstroke. They are fiddly to get situated right on my goggles strap but the buttons are easy to use, which is an improvement over some of the other swim earphones I've tried. The sound is disappointingly muddy though, and it leaks out so anyone can hear it, even from several feet away and that's weird. None of the other bone-conducting earphones I've used have that. There is only ONE of the proprietary loading cables included, so I'm wondering what will happen if I misplace or lose that one, or if it stops working. It's ok, but I hoped for more for the price. They're not cheap. Just hoping they don't stop functioning properly like several of the other pairs I've ordered. I think this is my 5th try to get one that's sturdy, easy to use, has good sound, can do Bluetooth & is easy to put music on it, and reasonably priced. Maybe I'm expecting too much.