Tropical storm Hilary on the west coast took out 2 of my 720p cameras. I could only find 4k replacements for my system. I bought 1 to see if it would work with my old DVR. It provided a crisp and clear picture with a wider field of view. I ordered 6 more cameras and replaced all of my old external 720p cameras. Garage camera is 720p compared to backyard 4k camera.