The only difference is that the 720w appears to be a discontinued product…?
I have heard through the grapevine that the outdoor V720W has defects (“water issues”)… I wonder if that had something to do with it being discontinued by ADC.
The new 721W are a bit of a pain-- the mount is easy to break and you cant full size the picture as you could the 720W. Its def a cheaper camera. The 720w did feel solid but i have had a lot of returns with water inside the camera