83DB, Linear Electrical Level, 600 Omh) Preview Resolution Resolution: 704*576(PAL), 704*480(NTSC) Video Compression H. 264, Support CBR, VBR;  Frame: 25F/ch/s(PAL), 30F/ch/s(NTSC) Output: 32kbps-1000kbps H. 264, Support CBR, VBR Compression Resolution CIF: 352*288(PAL), 352*240(NTSC) QCIF: 176*144(PAL), 176*120(NTSC) QQCIF: 88*72(PAL), 88*60(NTSC) Audio Compression OggVorbis, Sample ratio is 16KHz, Output ratio is 16kbps Working Temperature -10C-- +50C Working Humidity 10%--90% Computer Configuration (Recommend) Mainboard: Intel 845 or 865 Chipset Memory: 256MB Display Adapter: Geforce Mx400/420/440 series or ATI Radeon 7000/7200/7500/8500/9000 series