Omni-Directional Stereo Microphones designed for voice to text applications SD-Card slot, in addition to the internal memory the external SD card slot makes the memory capacity unlimited; besides, the SD cards can be used like a cassettes or tapes as with analogue dictaphones Easy to use editing functions (overwrite/insert/delete/lock) via slide switch Rechargeable and exchangeable Li-Ion battery (Charge via USB) The dictaphone is compatible with Dragon Professional/Legal (Individual), Recorder Edition (Note: Speech Recognition software not included)VCVA (Variable Control Voice Actuator) allows Voice Activated Recording and the preset threshold volume level is variable; the recording starts automatically and stops when the volume drops below the threshold levelIncluding license for DSS Player Standard (Dictation Module) for Windows and for Mac