Featuring 1 GB flash memory, the Philips Digital Voice Tracer 632 records up to 275 hours in four common MP3 mono varying file formats (HQ, SP, LP, SLP). Unlike many alternatives, this allows for a higher sampling rate and clearer recordings. Files are organized within four folders (99 files/folder) for easy retrieval and can be downloaded from the Digital Voice Tracer to PC via high speed USB 2.0. Functioning as a USB mass storage device, any type of files can be conveniently stored and shared on the device, making it ideal for personal, portable use. Features clean buttons for ease of use and the display shows all relevant information at a glance. The adjustable microphone sensitivity is perfect for both foreground and background recording and the front speaker w/ ClearVoice Technology (16 mm) reproduces stunning quality playback. Another great featue is the visual record level indicator that ensure audible recording at all times.The voice activated recording feature, when enabled, automatically records only when sound is detected, for hands free operation and the index mark feature lets you mark a particular point in a recording or playback for easy retrieval. Other features include slow and fast playback, LED record/playback, battery, and end of memory indicators.Includes a USB cable, Hands-free headset, battery (AAA) and user manual.