Say Security’s Digital Video Witness mobile DVR unit allows one to record up to four channels of video onto a durable system made to withstand the rigors of vehicular use. The system features stand-alone, real-time operation system, patented MPEG1, MPEG2 high-resolution compression technology, 3D user graphical interface; and remote management control function. This system is easy to operate. Its special design includes anti-vibration and shock. Say Security

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