infray Pen Flashlight Black Light, Zoomable, Small 395nm Blacklight Detector for Dog Urine & Dry Stain. IPX5 Water-Resistant, Powered by 2AAA Batteries

It's a great black light, light and reliable. I use this for work every day. I really can't think of anything negative about it. I use it to check identification cards I've also started using it to check for dust. Fits great! You cant keep it next to a pen you carry on a day to day. I haven't tried keeping it in the pocket of my pants, I fear I might hit something and snap it in half. I carry my in the shirt pocket and I have no worries about it being damaged. Clip does it job and does not fall out. I recommend! I gave it a 1 star in thickness because it is light and perfect for my needs. I can see it getting damaged if used in heavy operation such as mechanical.

Appears to be made with quality standards... time will tell... will update after a few months of use. It illuminates good quality fluorescent materials as if it were a neon sign. The zoom feature gives it increased distance of illumination but cuts down the area of coverage, which can be expected.I recently bought:https://www.amazon.com/Oralite-Microprismatic-Retroreflective-Conspicuity-Tape/dp/B00QHCQ45K/ref=sr_1_fkmr0_1?keywords=oralite+prysmatic+1%22+DOT-C2+Conspicuity+Reflective+Tape+lime&qid=1579652827&sr=8-1-fkmr0to affix to my smaller tools that I use when working on my wooded property. If lost in the grass or other debris I thought that I would be able to locate them with just a regular flashlight after nightfall. It does help in locating the tools with a regular light, but when using this UV light, that tape glows as if it is electrified... even from a distance of ten feet!! I don't think I'll be losing my tools anymore.FYI: batteries not included but working well with Tenergy Centura rechargeable AAA batteries or standard alkaline batteries.

I use this outdoors in the evening to look for certain kinds of insects and fungi that are fluorescent. It works well for this, even at a distance of several feet. Note that the output is a combination of bluish-white light and UV light, but the visible light does not obscure the fluorescence. In fact it is helpful in a way because then I know what is glowing. I suppose one could put a UV filter over it to eliminate the visible portion of the light. It also works well with rechargeable AAA batteries. Bonus application: if your child has glow-in-the-dark, stick-on stars on her/his ceiling this light will pump them up to the max! They really glow. Note for children: I am not sure how safe it is look at the reflection of the UV light up close. I try to avoid it.

This black light pen is great for the size it is. However, if you're using it to spy for glass that will glow when looking for uranium infused glass at your favorite antique store, it leaves a little to be desired. In daylight, because of its size, it's a bit underwhelming. A larger, brighter, pen light would make the hunt better. It works well in darkness, not so much n daylight. Hence four stars.

Well, I had bought this for UV curing glue and it worked pretty good. Bright UV LED and the build quality seemed solid. The button cap stopped functioning for some reason. I can get it to work with a different button cap from a completely different UV pen light, so its definitely something in the cap that went bad. Its been less than a year. Emailed the Infray company a few weeks back and still have not gotten any response so this is why I'm writing this review. EDIT: Very happy to say that Infray contacted me straight way when I used the Amazon contact the seller link. I had emailed them using support@infrays.com and that didn't seem to make it or be seen. They contacted me and they will be sending a replacement ASAP. THANK YOU INFRAYS!

I initially got it to use in my home because I have cats that have accidents, and was able to clean up. I took it on vacation to a hotel, and ...ew! Glad I had this handy light. Highly recommend for anyone that travels. I had it on a cruise and checked my cabin which turned out to be spotless, and later saw that the crew uses them when they clean to confirm their job was done right. Kudos to them!

I bought this light along with the same seller's 220 lumen EDC white light. (Which I'll be reviewing soon) I wasn't expecting the sheer power of this UV light. One's I've had before this are good enough to fluoresce rocks, check paper money, and other short distance things, but this will light up an entire room! The zoom has great optics, goes from very wide angle to a spot for distance with no rings or hot spots. It's fun to walk around and see just what lights up with fluorescence, and a lot of things do. Even some extension cords light up, some types of printer paper, the list goes on. A big surprise for me was the bathroom flooring. The pictures on the wall also have fluorescent paint. I added a before (normal lighting) and after (with the UV) of my hi-vis coats and vest hanging by the back door. Amazon's EBL rechargeable batteries work fine in this light. I reiterate: this UV light has more than enough power to light up entire rooms and/or find your way around in dark places. It is hard on your eyes though, avoid looking directly at its output or shining it into mirrors. Oh yes, be careful taking it to work. Someone borrowed it, went into the men's room, then we all started hearing yelling about how gross it is in there! (Sometimes it's better to just NOT know what's there that you can't otherwise see)

It works, the optical focus is a nice feature but the light doesn't reflect as bright as my other light although its very easy on the eyes and still works . It's very bright and seems well made.