This is a great little recorder. It has mutable functions like voice activated recording, microphone recording, interview, lecture, meeting, and voce notes. You can put the recordings in different folders to keep everything organized. With out added micro SD card the preinstalled 4GB hard drive gives you 43h 55m of record time. If you need to you can add a Micro SD card for extra record time. But what puts this aside of the rest of the voice recorders is that you can connect this to your computer and transfer all the recorded files for later reference. This is a must for every student that is able to record there teachers lecture.You can check recorders at guitarcenter.com.