The Sony ICD-MX20 is a professional Digital Voice Recorder featuring a hybrid storage system. Dictation can be recorded on the integrated 32MB of flash memory or onto a Memory Stick PRO Duo card (not included). Once recorded, users can easily transfer their audio files to a PC for processing and archiving via an integrated USB2 port. Plus, the unit allows for organizing message folders directly on the Memory Stick Media by type: sales letters, customer replies, memos, etc. The most notable aspect of the Sony ICD-MX20 is that the unit will automatically stop recording during a silent pause, and then begin again as soon as you speak.