COSOOS 2 UV Black Light Flashlight, 2 Pack 395nm Mini Pen Light with Clip, Waterproof Ultraviolet Flashlight for Leak, Pet Urine, Scorpion, Hotel Inspection, Dry Stain and Bed Bug.

These UV flashlights work as expected. They are inexpensive, lightweight, and easy to carry in a pocket or small bag. Build quality is basic but acceptable for the price, and nothing arrived damaged or defective. The UV output is usable and does what I needed it to do. That said, the color frequency seems slightly off compared to higher quality UV lights I own. It still lights up materials and surfaces clearly, just not with the same intensity or color accuracy as more expensive options. For casual or occasional use, these are perfectly fine. I used them to illuminate a few different items and included photos showing the results. They are convenient to keep around and work well enough for quick checks without worrying about losing or damaging a more expensive light. Overall, they are a good value if you want a simple UV flashlight that gets the job done without spending much money.

Works great for me to find uranium glass at the thrift stores. I have been hunting for about a month now and have attached a photo of the current collection. This thing fits in the pen pocket of my chore coat (snug fit, but fits), easy to hold in had and quickly click on and off check the glass without looking too weird. It takes 2 triple A batteries which are cheap and easy to find. I haven’t tested the difference between this light wavelength (395) and the other (365) but I will get some of those to try out as well. For the price, worth it. Get at least two so you can lose or give one away to another hunter you meet along the way….as long as you understand they will be your nemesis from that point forward. On second thought, keep the other and use both when they are looking so they know they have been defeated by a superior being with superior technology. No kindness in the thrifting uranium glass wars. No mercy. Find them all. Hoard them. Don’t let THEM have any! Don’t read this. Don’t buy a light and stay away from my thrift stores!!!!

Works great. I bought to use to check clothing ahead of time for a black light event, and it was very helpful, because what I was planning on wearing didn't glow at all. Was surprised to see what items and materials glow and which don't - not all bright colors actually glowed. Would recommend. Then for fun started exploring the house, and it was so interesting to see. My pets were surprisingly not as messy as I thought, but my kitchen needs some more cleaning lol. Fun to play around with, seems sturdy and well made, pretty good amount of light, and I like the smaller size - about the size of a marker - which makes it easy to carry in my bag while thrifting.

As described works well

Fantastic little light. It is very bright for its size and shows things you would rather not know about. The clip is tight and holds well and I like the(2) AAA battery capacity as it's easier than having to keep charging since I don't use it a lot.

I recently got the COSOOS 2 UV Black Light Flashlight 2-pack, and I’m really impressed with their performance and convenience. These mini pen lights are compact and lightweight, making them incredibly easy to carry around—especially with the handy clip that lets me attach them to my pocket or bag. The 395nm UV light is bright and effective for detecting pet stains, authenticating documents, and spotting hidden markings or bed bugs. Despite their small size, these flashlights pack a powerful ultraviolet glow that doesn’t disappoint. They’re also waterproof, which adds durability and versatility for outdoor use, or if you happen to drop them in damp spots. Battery life is solid, lasting through multiple uses without needing frequent replacements. Overall, the COSOOS UV Flashlights provide excellent value, combining portability with strong UV detection capabilities. The two-pack is perfect for sharing or having a backup on hand. I highly recommend these for anyone needing a reliable, compact UV flashlight.

I use this pen to check IDs at work. Works well and easy to carry around; it easily fits in my pocket or clips to my shirt. Seems to have a good battery life as I’ve been using it for a few months and have yet to replace them. Good deal for the price! Works well for detecting uranium glass too.

Excellent little lights. Small and easy to carry and pack. Good battery life and nice and bright. Great for looking at rocks, some stamps and some bugs.

Leider ist die Lampe bereits defekt angekommen. Nachdem die Lampe selbst mit neuen Batterien nicht an ging, habe ich sie vorne geöffnet. Wie man sieht hat sich das rote Kabel gelöst.

Fantastic

Excelente lamparas

I receive normal light, not UV light.

Funcionan muy bien, y dura bastante sin tener que cambiar la bateria