V3 365nm Black Light UV Flashlight – High Definition Ultraviolet - HIgh Power and Long Range Professional Grade Beam Best for Professional/Commercial Use – USA Stock

Just get it. I have many of these black lights that advertise showing cat urine, etc., and they do not work well or at all.This is not the case for this light. Best in class, hands down. It is sturdy and works a little too well, if anything. What I like a lot is the ability to use an extension to use three 18650 batteries for longer life, and it works just as well with the included two 18650 batteries. I had other 18650 batteries and use three in mine using using the included extension.The main use for me was detecting areas of carpet around the litter box that may need to be shampooed, and when I walked around the house, the results were amazing and yet disturbing. I am a clean freak, and this simply will let you see what your eyes don't. So if you want a truly clean house, this is a must :)PS. For those unfamiliar with NM values. Don't be fooled into thinking a higher value is better.Lower is better, depending on what you want it for.375 is ideal as it is a more pure uv and does a better job detecting scorpions, pet stains, forensics, currency verification, and things like that.395 is ideal for Halloween/party effects, glow in the dark, and casual use.Hope this helps. As the saying goes, you get what you pay for. Amazing product and again, be prepared for what you will see!

In a separate review, I gave a glowing review to the $40 "Little Brother" version of this light. Well, the "Big Brother" is no less deserving! I've had it for about 9 months at this point, and have used it everywhere I go.As someone who collects stones (both raw and shaped), and who also loves UV-reactive things universally, this light opened up a whole new world for me. Prior to this, I owned a 385-395nm light, which I enjoyed...BUT, it has a lot of limitations.For one, being much closer to the visual range, it gives off a lot of visible light in the pink and purple hues, which overwhelm everything in its beam, and makes photographing the UV reaction next to impossible, as it overwhelms the camera lens. Second, there are a limited number of stones that react in that wavelength range (I've seen 2-3 dozen, give or take, so far).But at 365nm, BOTH of those issues are solved. There is still a small amount of bluish light visible, but very small compared to the higher wavelengths...so the visibility, details and ability to photograph are all IMMENSELY better. And the number of stones/minerals that react at that specific wavelength is EXPONENTIALLY greater--I have well over 100 different stones in my collection so far, and there are hundreds more...PLUS, all the stones that react at 385-395nm ALSO react at 365nm.So in every way, a 365nm light is hands-down the far better choice for those who love UV.After that, which light is best for you depends on what you plan to do with it. If your viewing of UV is generally limited to stuff in one room, or stuff within arm's reach, the "Little Brother" version would probably do just fine.But for me, I like POWER. I like the ability to take my light outside on hiking or mining trips, and spot UV-reactive stones at a distance. So with both my 385-395nm light and this one, I chose to go with the bigger, more powerful (and therefore, more expensive) version.But I haven't regretted that decision one bit in the 9 months since I bought it. The 2 batteries that come with the light are a unique size (not AA or AAA as many lesser lights tend to use), but they last a long time during constant use (4-6 hours on average), and are rechargeable.From empty, they do take a while to fully recharge, so I recommend buying an extra set of batteries (which is something I do with ANY and EVERY electronic device I own), so you can have 1 set to use while the other recharges, or to extend your usage time when away from places to charge. Two sets of batteries will last you most of the day--8 to 12 hours, depending on usage.The only downside is, the longer you use it, the hotter the grip gets from the batteries heating up, almost to the point of becoming uncomfortable to hold. But if you switch it off when not in use, and take a break every little bit, that shouldn't be a problem.You can also get the smaller version, which only requires 1 battery (which can be charged inside the light via a charging port in the side of the light body), and doesn't have anywhere near the heat output of the larger, more powerful light.So it all depends what you want out of your light. I prefer power, so I chose the larger light. But having bought the smaller one for 4 friends, all of whom absolutely LOVE it, you cannot go wrong with either light.But having seen and used more than a dozen different UV lights of all kinds and qualities, for me, UV Beast makes the best ones for the money.Yes, there are cheaper lights out there...but they also have more issues--power, flickering lights, go through batteries like candy, etc. So if you want a top-quality light that works well, is rechargeable, and provides you a choice between small & convenient, or large & powerful...UV Beast is my recommendation, every day of the week.And that sentiment is universally shared by everyone I have either bought the lights for, or who has bought one themselves based on my recommendations.

I purchased this device to rock hunt emberlight. Not only is it a great light, its durable and has an impressive use period. I usually carry a spare battery while I am walking the beach at night. I tend to rock hunt for 5-6 hours. I no longer carry a spare battery as the light has provided enough power to cover this amount of time. For all transparency, I use the light for about 5 hours, and turn it off while I take breaks. I recently borrowed the light to a newbie, who dropped it immediatly after I handed it to him. I replaced the battery, opened up the device and checked the connections, and it did not power back up. I contact support to ask how much it would cost for warranty repair, and to my surprise, they are sending me a new light! Rarely do I have this experience! Exceptional customer service! I have roughly 2K in UV lights and never have I had such exceptional service!