Well, the usability is okay, menus' navigation is done with the wheel, while commands like Play\Pause, FF,RW etc are done with middle and rear buttons. The devi

Well, the usability is okay, menus' navigation is done with the wheel, while commands like Play\Pause, FF,RW etc are done with middle and rear buttons. The device came in with a plastic protection case. Two outputs - headphones and Line out\COAX. Can be used as an external DAC with windows PC (maybe other devices too, never dug too into it). The UI theme is customizable: http://fiio.me/forum.php?mod=viewthread&tid=40141&extra=page%3D1 http://fiio.me/forum.php?mod=viewthread&tid=40141&extra=page... Firmware is updated pretty often even for older models. PS: Oh, and it has Apple in-line headphone control. (Android in-line control works too, but only for Play\Pause\Next|Prev. No sound control.)