As the majority of Japanese telephones NEC 804N is made in the clamshell's form factor and can work in the networks of operators WCDMA (3G) and GSM (900/1800/1900 MHz). The telephone is oriented on the amateurs of music that is why it has a hard MP3-player with control buttons situated on the front panel and 450 Mb of integrated memory. If this volume is very small for you, you can easily enlarge it using the memory sticks microSD (TransFlash).