1.Support WMA/WAV/ADPCM format, standard USB joint, built in SD card, capacity memory for 512MB,and support external SD card for 1GB; 2.support ASF format of MPEG4, dimensional sound of ADPCM; 3.Video recorder MPEG-4 format, dimensional sound of ADPCM; 4.photo-browsing function, JPEG format, support EXIF2.1; 5.Video output. Support to play films similar to VCD image; 6.turn off automatically, time can be set up; 7.games, calendar, memory-checking function; 8.Hold key and screen protecting function; 9. 2.5 inch , 260K color ,16000K pels TFT screen; 10. dimension：90*60*17.5mm