It goes where others cannot
We do a lot of dryer vent service where a regular chimney inspection camera is just too big to make it through the bends of most dryers in our area. We have a lot of galvanized Sheet Metal, 4 inch duck that goes up through the wall and finds its way out through the roof and this run can be as far as 30 - 35 feet easily, although people have complained about the connectivity of this camera with the repeater attached, it works very well. Also, I have taken a piece of coaxial cable and wrapped it around the camera, body and my cleaning rod and this is helped with this problem, however be cautious that you don’t lose the cable.