Okay, I had no idea these worked so well! I put batteries in the UV Flashlight and light up the carpet searching for clues. What was invisible before was now completely lit. A big white stain reflected back at me in the blue/violet light. The stain was not only on the carpet - it was also up the wall!!! Finally, I could clean our house thoroughly and remove that mysterious smell that sometimes caught my nostrils, which I did not know where came from.

Can only be recommended. Keeps what it promises. A really good quality UV flashlight that anyone can afford.

I bought this one to look for amber in the morning and evening at the beach near our cottage between Blaavand and Vejers at the Danish Westcoast. It's really sharp and it even exceeds my expectations. I am surprised that the UV light enlighten the amber so extreme. It's almost cheating to use this lamp. It is also very durable, because I've lost it several times - also at the shoreline.