Defender SN502-4CH-002 Feature-Rich 4-Channel H.264 DVR Security System with Smartphone Access and 4 Indoor/Outdoor Hi-Res CCD Night Vision Cameras 24/7 Lifetime live customer support is available through phone, email, and live web chat H.264 video compression lets you record over a month of footage Access live video footage directly from your iPhone or BlackBerry Smart Phone Let the coaching iMenu teach you about the DVR&#8217;s settings and features