Works better than expected, although my expectations weren't high for the price paid. I used it right away to look behind the wall when doing some plumbing work. I couldn't tell what the builder had done in there, and there would have been no way to see anything without a device like this. So glad I had it then. Keep in mind that image is only as stable as your hold on the camera, every movement is amplified on screen, and focus takes some getting used to, but for a task like this, it showed me exactly what I needed to see. I don't know how it could have worked without the semi-rigid cable, so that's a great feature on this device that apparently isn't standard on all such cameras. Cable connection to my Galaxy S5 was easy and reliable, but the cable (vs. wireless) did complicate things when working with two hands, and in this case, the semi-rigid cable actually made things more difficult, because the phone kept moving around as I moved the camera. Wireless option would have allowed me to put the phone somewhere for easy viewing and free up a hand to manipulate/stabilize the camera itself. However, without comparing the two models, I don't know for sure if video quality with wireless would have been the same - and that was the reason I went for the wired option in the first place.