I am of this little masterpiece so excited that I have already presented him. The predecessor was also a unit of Sony. Unfortunately, with so much cruft that he was inconvenient for my purposes. I just wanted a smart player, I can stow loosely in your pocket, who has a super sound and is easy to assemble and load. 1. grandiose sound even with quiet tones 2. wirelessly via USB connection to the PC .... Drag & Drop .... thereby invites a good piece equal and there you go! 3. very easy and good händlbar (clothing clip). Strong buy recommendation !!!