Innovative boundary-layer microphones designed for 360º sound pickup and utilizes acoustic pressure from surface of table. 8GB built-in memory. PCM stereo recording in MP3 and WMA formats. Recording time: 90 days (SLP mode), 22 days (LP mode), 15 days (SP mode), 11 days (HQ mode), 3.5 days (SHQ mode), 12 hours (PCM mode). Adjustable microphone sensitivity with ClearVoice for quieter voices. High-speed USB 2.0 connectivity to computer for file download and battery re-charge. Meeting microphones with built-in wire storage . Supports up to 99 recording in each of 4 available folders . Extra-large backlit white LCD display. Instant 1-touch recording or voice-activated recording. Variable playback speed. 3.5mm headphone jack and 3.5mm line/mic input. Compatible with Windows 7, Vista, XP, 2000 and Mac OS X and Linux. Includes 2 boundary-layer mics, stereo headphones, USB cable, splitter cable, 2 AAA rechargeable batteries, carry case and remote