I bought this endoscope to inspect the mechanics of my Folder. One can of course also behind cabinets, under furniture, look into drains etc.. The supplied software could be easily installed and works without problems, at least on the PC. Would be nice if there were appropriate software / app for Android tablet. Property there unfortunately found nothing. So you constantly have the laptop with rumschleppen. By the illuminated lens head can be seen even in dark places yet well what's going on, but you have to get very up close to a reasonably sharp and illuminated image. But is it enough times from all around, for example behind a closet rolled things, or to detect rust in automotive cavities. For professional use rather unsuitable because it leaves something to be desired but for meticulous observations of sharpness and image quality. The image blur / blurred toward the edge very strong. Conclusion: a nice gimmick for home use.