Swann SW245-SBD DVR4-Pro-Net Combo Kit with 4 Bulldog Hi-Res Cameras Networkable DVR for remote viewing of the cameras or recorded events over the web Set it and forget with the pre-installed 160 GB hard drive State of the art feautres including motion detection, alerts and easy on-screen programming CCD hi-res Bulldog cameras produce a maximum of 33-feet Night Vision capability in an all-weather housing High resolution MPEG4 compression switchable to Motion MJPEG video format for best recording and viewing results