The sound is good but too quiet. While you can try with the equalizer to compensate for this, the control range but does not include all sound pitches, although you can set it.
The usability is poor. Mini-keys or buttons to press the finger. The keys are arranged for my taste bad and of poor quality. A button has jammed permanently with me.
If you press while playing a track for the first time the Return button to get to the reproduced folder. Returning back to the playback and then press Return once, then you're suddenly in the menu. Now with the return key the menu is stored permanently. If you switch the player off and on again or you change the playback folder, then again on the first press in the playlist. Then in the menu - Total GAGA and especially annoying.
The display looks good, can be seen only in plan view. Unfortunately, you can only see one line. The search of individual songs or folders is very tedious. Scratch-proof, the display is unfortunately not.
The battery lasts only a few hours, on my first model just two or three. Even the clip is much too small. Only the appearance is good. Probably the only plus!