My plumbing outfit is normally pretty competent but they charge $300 bucks for just about any visit and work they do. I had ** subtle ** leakage in a cramped area behind the tub in my bathroom that was dripping to the floor below. Plumber couldn't get to root cause. The camera showed me that our clawfoot tub has progressive corrosion around the underside of its drain causing leakage and that also, a nearly hidden pipe that goes up to the shower never had it's sealing ring tightened.I turn on the shower and this camera IMMEDIATELY shows the leak spurt out at a particular location - i.e. immediate cause & effect evidence.The picture is very clear. The ability to take pictures and even movies for what you find puts it over the top.* Comes with a decent case and a perfunctory owners manual.* Battery is replaceable.* I have been able to get things done without referring to the manual much. The ONLY thing that threw me off for a moment was 1) being unable to find the micro-USB port to begin charging (It's behind a skinny strip of rubber seal you can pull back) and 2) It took me a few minutes to realize that I didn't have to add a USB card as they were actually nice enough to provide a 32GB one.* The cord is pretty darn long and is very armored. Slight frustration: You'll spend most of your time adjusting and wrestling with the fiber optic cord/snake to get it just so. But that's life eh?SUMMARY: While this is my initial use, I can say that - at this point - I can recommend this product. It's one of those things where I don't envision using it but once a year but when I need it, it will come in very handy.EPILOGUE:I could have used this years ago while doing electrical work in our turn of the century older house (non standard studs) and also when I was mounting big screen TV. At that time, the way I had to gather info was circumstantial: pounding on wall, stud finder & drilling a hole or two and patching later. This device would have solved all that and saved me a lot of time.