With enough capacity (which depending on your use will force you to return to your computer 1 to week or month) management by Tags (Author, Album, ...) or music folder, with the option to create playlists directly on the MP3, an autonomy of approximately 20 hours, which is not worth the Sony (but the price is not the same either!), the display of album art, non-touch buttons but very well anyway, a timer function that automatically stop the Mp3 (when you plug it into the chain at night for example), headphones automatically delivered of sufficient quality to commodity (but prefer intra- or hoops if you want to enjoy music in good conditions in noisy places or simply in the street) ...
this MP3 player is simply a must for its size and characteristics, especially in terms of value.
It has a video playback function (obtained by download from YouTube) after conversion in software (long operation), but the result is not up (lower screen) and impossible to read subtitles the resolution. Similarly, the voice recording function is not huge (to record such courses) and will therefore be reserved for personal voice notes.