I should have been more clear: those buttons are still "visible" in that they have a haptic interface. I have a headphone with "tap to play/pause, swipe to chan

I should have been more clear: those buttons are still "visible" in that they have a haptic interface. I have a headphone with "tap to play/pause, swipe to change songs or volume" - it's impossible to know without reading the manual or triggering one of these actions by accident. Which incidentally also happens a lot. That's bad interface design IMO. I guess the headphones look "cleaner" but it's really annoying in practice and not worth it.