The ICD-PX470 from Sony is a digital voice recorder with a built-in USB connection. It records in both linear PCM and MP3 formats and is suitable for capturing lectures, meetings, notes, and even live music. It requires no cable to communicate with your computer; simply plug the unit into an available USB port on your computer to move files back and forth. The unit provides 4GB of built-in memory, but this is expandable via the microSD card slot. A calendar-search function renders finding your files a straightforward task. The audio quality of recording is served by a low-cut filter for eliminating extraneous noise and rumble, as well as Auto Voice Recording mode, an S-microphone system, and adjustable options for capturing stereo or mono sources at close range and at a distance. The two included AAA batteries enables the unit to last for up to 55 continuous hours. Sound Organizer software for Windows is also included.