This pocket-sized recorder is sleek in style and powerful in performance with hours of continuous recording capability. The easy-to-use thumb pad makes for quick and convenient operation of functions like file management, choosing playback and recording modes and more. Timer recoding and voice activation provide excellent versatility. 144 hours 20 minutes recording time. Enjoy a staggering 8660 minutes of continuous recording time in LP mode with 256MB of internal flash memory. Place an index mark at any point during recording or playback to quickly locate passages of interest. Organize and store recordings in four separate folders, up to 100 files in each folder. Program the VN-4100 to start and end recordings at specific times for the ultimate in recording convenience. Slow and Fast Playback modes let you listen to audio 25 percent slower or 50 percent faster than real time. Easy file management functions allow you to erase single files, multiple files as well as transfer files. Voice activation extends recording time by recording only when the microphone senses sound.