I had this Walkman for a while and what can i say but wow, the battery life is sooooo long, it could last all week on constant, it claims 50 hours and it sure feels like it, you kinda forget to actually charge when you need it. The radios ok for when you get tired of your usual mix. The ease of use with it when you want to change volume,song and other stuff is great, all one touch with the middle wheel and dare i say it on par with the ipod scroll wheel, it just feels very natural. The sound quality i have no complaints about as Sony always delivers as well as the excellent headphones which give a very good bass for when you want to up the tempo at the gym. The build quality is solid, you do feel such a small device could survive anything you throw at it and it has since ive had it. The one failing is the provided software which was not very intuitive and failed at most times which is dissapointing but if you preservere you will get all your songs on, just dont expect it to be quick. in Short a life extention devive i could never do without.