Swann SWDVR-42555H-US 4 CH D1 DVR with 500GB Hard Drive (Black) View & record up to 4 cameras simultaneously during the day, night, indoors or outdoors Set & forget by recording continuously from 4 cameras for 30 days+ onto a massive 500GB hard drive, even longer with motion detection Surveillance in the palm of your hand with live viewing on 3G/4G-enabled Smartphones & tablets including iPhone, iPad & Android devices with remote notification via email Remote viewing is easier than ever to set up with UPnP (Universal Plug n Play) auto network configuration Fight back against crime by deterring intruders, protecting your property & knowing what's happening at all time. Cameras are not included. View & record from 4 cameras simultaneously during the day, night, indoors or outdoors^ Set & forget by recording continuously from 4 cameras for 30 days+ onto a massive 500GB hard drive, even longer with motion detection^ Surveillance in the palm of your hand with live viewing on 3G/4G-enabled Smartphones & tablets including iPhone, iPad & Android devices with remote notification via email^ Remote viewing is easier than ever to set up with UPnP (Universal Plug n Play) auto network configuration^ Fight back against crime by deterring intruders, protecting your property& knowing what's happening at all times