This digital music player for storing and playing AAC and MP3 music files on a removable 32 MB memory card, which holds up to one hour of music.The music player also includes a built-in FM radio, handsfree headset with voice dialing and answering functionality, display for music information, USB cable supplied for downloading from a compatible PC. Self-powered from AAA battery, it can be used with or without a Nokia mobile phone.
A dedicated player such as the SanDisk Clip+ at 8Gb with a purported 15hr battery life (reviews I've read say it is very good on this front), would save you a fortune in batteries.
I've got a clip and it's a great little piece of kit. The clip for it is a bit flimsy (mine broke) but fine for a pocket.