4CH CCTV mini USB DVR real time Support win7,VISTA,XP input:4ch video and audio output:USB 100fps About usOur company is a professional manufacturer that is specialized in researching, producing and selling CCTV Cameras and stand-alone DVRs. Our products include waterproof IR Cameras, Dome Cameras, Bullet Cameras, Box Cameras, Hidden Cameras, IR Illuminators and stand-alone DVRs. Our ERACAM brand ...