1) Card design easy to take
2) Most 2/3 MPEG1/2 audio support, supports WMA
3) Supports recording to WAV or ASF format of document preservation
4) AB of time functions
5) Express fast retreat into function
6) USB1.1 standard
7) Chargeable Li battery
8) Many kinds of design
9) Memory size: 256MB, 512MB, 1GB, 2GB, 4GB