Positives:
+ Very long cable
+ (Relatively) easy installation (hardware is detected under Windows 7 fast)
+ Very cheap (but it is possible cheap!)
Disadvantage:
-Extremely poor image quality (out of focus, mushy)
-mitgelieferte software for Windows XP program is running under Windows 7 limited (Camera is partially incorrect detected / controlled, software crashes / will not start)
On my machine it was not possible, the image To focus / focus. This was clearly the fact that the image sensor or the lens was installed at a slight angle. Here probably the quality control has not resorted / serial fluctuations are obviously very large. As a result, large parts of the picture were still blurred. In addition, the lighting is inadequate in really dark cavities. One can perhaps detect the edge of a cavity, but a look into the depths is not possible (which is also the fact that the focus is about 6cm, as already described in other reviews). Then one turns the lights on full power, the LED lights dazzle the sensor, so that show bright edges, where you can see nothing.
I want nothing here to run further about the lack of contrast and colors sluggish. Absolutely inadequate.
Conclusion:
Very poor image quality, unusable. Maybe have children still enjoy it, so go to Wühlmaussuche but insufficient for a meaningful use in the home improvement sector