Nokia 5310 XpressMusic. Works with AT&T and T Mobile service only. Thin (0.39in.), classic design with aluminium side panels. 3 dedicated music keys, with diamond cut music key symbols. Crystal clear sound, enabled with a dedicated audio chip. Music playback up to 18 hours. 2 megapixel camera (1600 x 1200 pixel resolution). 4 x digital zoom. 2.0" QVGA 240 x 320 pixels, 16 million color display. Ambient light sensor for improved readability and increased operation time.