Shortwave 254nm UVC LED Flashlight, SW UV Torch Lamp, Fluorescent Minerals Phosphor, Tagged Stamps Detector LED Torch with ZWB3 Optical Filter

It’s really hard to find a good portable UV flashlight for mineral hunting, let alone a LED option! Doing research trying to find the right one, probably the biggest help for me in filtering through all the noise were the great reviews posted here, but also this site: https://geology.com/articles/fluorescent-minerals/ which explains that novelty store blacklights are not enough for serious appreciation of flourescent minerals. Scientific lamps are expensive and usually not portable. So I was excited to try the LED UV flashlights sold by WONDSUNSON Stores. I actually bought three, to compare their features, and to help me decide what would work best for me. Here are the pros and cons of each, and then you just have to decide for yourself which would work best for you. I will way this about all three: it is great to find a legit short (UVC) and mid (UVB) wave UV light that is portable and rechargeable. All three are excellent, but here are a few distinctive features that separate them:—Shortwave 254nm UVC LED Flashlight, SW UV Torch Lamp (https://www.amazon.com/dp/B0D7ZNZMSN?ref=ppx_yo2ov_dt_b_fed_asin_title#customerReviews): This is the most economical, a great bargain, and works amazingly well. It only produces the shortwave 245nm, but it has the ZWB3 Optical Filter, so the flourescent minerals (works well on scorpions too). Some might think it is dim, and comparing it to a novelty blacklight, sure, but it is actually working perfectly, it is supposed to be filtering out the extra visible light that interferes with accurate observation. This is perfect for close (not long distance) observation of fluorescent minerals. I’m going to use it to show off my mineral display to others, it really makes the mineral colors stand out.Pro: Love the single button, single purpose use.Cons: have to take the battery out whenever you want to recharge in it. Not a big deal, just unscrew and put the batter in the charger, but not as easy as just plugging in a USB-C cable, like you can do with the next two flashlights.—Shortwave 254nm UVC & Longwave 365nm 395nm UVA LED Flashlight (https://www.amazon.com/dp/B0CKSVYHGS?ref=ppx_yo2ov_dt_b_fed_asin_title#customerReviews): Probably my favorite of the three, but that’s just me. Why? It’s a two sided flashlight, one side 3pcs UVC 254nm LEDs, so all the power of the light reviewed above, but the other side also has the long wave settings. Those are nice extras for just $20 more. The lights on both sides are strong.Pros: if you can use the range of short and long wave light, this does both very well. It’s easy to recharge with the USB-C cable.Cons: the power buttons and the charge indicator lights illuminate, which can be distracting, especially when you’re trying to view minerals in an otherwise dark environment. I just put that side of the flashlight in the palm side of my hand so that it blocks the light.— Longwave & Midwave & Shortwave UV Light Flashlight 254nm 310nm 365nm (https://www.amazon.com/dp/B0DP2GQ2VR?ref_=ppx_hzod_title_dt_b_fed_asin_title_0_1) This one offers everything, and was a little more than I needed. I’m not doing a lot of jade detection so the 2 tips and white LED light was a little lost on me. It is not the most expensive flashlight they make (the lamps, of course, will be even more costly), but still an amazing price for the features. I’ll be honest, it might be trying to do too much, as I found the 254 nm lights a little underpowered. The white LED light, however, is very strong.Pros: if you need the range (long-, mid-, short-wave,) combined with a white LED light, this is a good option. Also, it’s easy to recharge with the USB-C cable, and I like the power indicator shows in percent.Cons: the power buttons and the power percent indicator lights illuminate, which can be distracting, especially when you’re trying to view minerals in an otherwise dark environment. I just put that side of the flashlight in the palm side of my hand so that it blocks the light.Alls things said, I got all three and I’m happy with all three. I’ll probably gift one to another rockhound friend, and keep my two favorite ones for personal use.

Two questions paralyzed me when I got this light and didn't see an immediate and vibrant result: Is this really shortwave and why is it so dim. To the first question, I feel confident it is shortwave. I have items in my collection that show a different reaction from my longwave light. I don't own another shortwave to compare, but I see something.To the second, I have learned that shortwave is even farther from visible light than longwave, so the familiar purple glow from a blacklight should not be expected.Bottom line, I have a rechargeable and portable short wave uv flashlight for exploring my collection. I need to use it in a dark room, and doubt I will find anything amazing in the wild from 3 feet away, but it works. And the price is a third of other shortwave lights I have been comparing to.

Not bright enough. Long charging time.

Like many rockhounds, I have been wanting an 254nm LED UV flashlight for. . . decades. A couple years ago I bought a corded lab lamp, that I was powering off an inverter on a drill battery.This is brighter, and less than a fifth the price. It still doesn't overpower other lights, but you'll have a much better time with something like this than with the older, dimmer, more awkward shortwave lights.

This product works as advertised but is pretty low powered. Don't expect to scan the country side with it. It will probably be OK at your feet but not much further. That said, it works well for viewing samples. It should also works well for curing glue. I would like a little more power but am generally happy with the product.

This light is a lot dimmer than the video shows. Trying to get a full refund has not been easy. Still trying to get a shipping label after over two weeks. They want me to ship it back to China! But it was shipped from Monticello California.

Glad to have a UVC lamp!

Not as powerful as anticipated, but it works decently for rocks that have good reflectivity.