So I bought this with the hope of using it for all sorts of different projects. The one that prompted me to buy it is to look inside of one of my cars to see how bad the rust inside the frame rail was. It worked pretty well for this.
The camera is pretty clear and the rotate screen feature, is nice, along with the brightness and contrast adjustment. I have used a rigid see snake before, and I find this tool to have a better quality camera and display then the see snake.
It does have a jack for video out, which I haven't tried yet because it didn't come with a cable :( so far I haven't been able to find the cable for it yet - I'll probably have to make one.
The camera requires 4 AA batteries to function. It feels reasonably well built and the quality looks to be pretty good - overall I am happy with it.