Phyiscal buttons (god I hate the current stock android widget with everything tiny tiny outside of Play/Pause)

Won't break your USB port if you drop it the wrong angle.

Sony can be trusted thr sound will be good.

Separate battery from your phone that probably lasts way longer, like days or weeks.

No notifications coming in (feature or not? yours to choose)

People buying this will also buy a SD Card, and I assume they are the same who still bougth the iPod Classic.