Product Specifications * Size WxHxD: 144mm x 80.7mm x 27mm * Weight: 340g with battery * Display: 3.8", 320 x 240 pixel resolution, backlit LCD Display * Capacity: 20GB Hard drive (1) * Battery Life: Up to 22hrs continuous audio playtime (2). Or up to 7hrs of continuous video playtime (2) * Interface: USB 2.0 (backward compatible with USB 1.1) * Video Playback Format: Windows Media Video (WMV) 7, 8 and 9 * Audio Playback Format: Windows Mediaâ„¢ Audio (WMA) (Lossless, Standard, Voice), MP3 * Photo Format: JPEG * Windows Media Player 10 Supported Formats (3): ASF, DVR-MS, AVI, MPEG1, MPEG2*, MPE, M1V, MPG, MP2, WAV, AU, SND Based on 85 hours of movies encoded at 500kbps, 4 minute songs encoded at 64kbps WMA, with 20GB hard disk drive and all available disk drive space dedicated to either video, audio or pictures. (1) 1GB = 1,000,000,000 bytes. Available capacity will be less. Reported capacity will vary. (2) Actual battery life will vary with use. (3) Some formats may require additional codec or software support. * User should have MPEG2 decoder installed on PC about $500 bucks retail, looks to be the size of a PS2 portable Seen it for $299 on ebay as a buy it now