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🔦 Illuminate the unseen — because what’s hidden shouldn’t stay hidden.
The ULTRAFIRE WF-502B Black Light UV Flashlight features a powerful 395-405nm LED that’s 30% brighter than standard UV lights, with a zoomable beam for precise targeting. Built from heavy-duty aluminum and rated IP65 waterproof, it’s designed for durability in tough conditions. Ideal for detecting pet stains, leaks, fluorescent minerals, and verifying security documents, this compact, battery-powered flashlight is a versatile tool for professionals and enthusiasts alike.













| ASIN | B07JKD522X |
| Additional Features | Adjustable |
| Batteries are Included | No |
| Battery Type | Lithium |
| Best Sellers Rank | #89,092 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #903 in Handheld Flashlights |
| Brand Name | ULTRAFIRE |
| Color | Black |
| Customer Reviews | 4.4 out of 5 stars 1,679 Reviews |
| Finish Types | Black |
| Included Components | Belt Clip |
| Item Weight | 104 Grams |
| Light Path Distance | 50 Feet |
| Light Source Special Features | 30% brighter than other UV flashlights, zoom function, used for pet urine detection, security/ID verification, machinery leaks detection, mineral lighting, and identification |
| Light Source Type | UV LED |
| Manufacturer | UltraFire |
| Manufacturer Part Number | UN788000142493 |
| Manufacturer Warranty Description | 3 year warranty. |
| Material | Aluminum |
| Material Type | Aluminum |
| Model Number | WF-502B |
| Mounting Type | Clip-on |
| Number of Batteries | 1 Lithium Ion batteries required. |
| Number of Light Sources | 1 |
| Power Source | Battery Powered |
| Shape | Cylindrical |
| Size | Mini |
| Special Feature | Adjustable |
| Style Name | Compact |
| UPC | 788000142493 |
| Unit Count | 1.0 Count |
| Voltage | 3.7 Volts |
| Warranty Type | Seller |
| Water Resistance Level | Waterproof |
| Wattage | 10 watts |
| White Brightness | 200 Lumens |
6**N
Nice and bright
This worked great for detecting freon leaks in an automotive A/C system. It’s perfect for spotting those little things that regular lights just can’t pick up, like pet stains or hidden markings. It has great power with its UV 395-405 nm LED. The beam is strong and covers a good area, making it super handy for all kinds of tasks. Plus, it feels solid and well-made. If you need a high-quality UV flashlight that does the job right, this one’s definitely worth checking out!
J**E
It's good, small and bright.
I bought this flashlight for uranium glass shopping. Testing it on the uranium glass I already have, it works as expected. I took it paint shopping recently too. I was looking for what paints are UV reactive, to spice up some things I'm planning on making. The added bonus is that it charged up the glow-in-the-dark paints too. It's nice being able to test paints in the store, especially with this compact size. My older lights were much larger, and more cumbersome to carry into stores discretely. It takes a standard 18650 battery. We have a bunch for other lights and assorted stuff. 18650s are the new standard for portable devices, replacing AA/AAA batteries that would just die off fast.
M**E
Strong, effective black light—just be ready for the unusual battery
This is a powerful UV flashlight that really does its job well. Whether you’re checking for pet stains, leaks, or other hidden messes, the beam is strong and clear, and it reveals details even in well-lit areas. The one thing to note: it requires a 18650 rechargeable battery, which isn’t something most people have lying around. You’ll likely need to order it separately, and it’s not included with the flashlight. Still, excellent performance overall—just be sure to have the right power source ready to go.
T**M
Solid UV Light
Bought this for several reasons, but the most influential was to use it to track game after dark. This light is really bright and has white light mixed in so I don't need two flashlights when working after dark. Blood trail glows like neon with this light and makes it much easier to track your game after dark. Not sure how it works for curing resins but it does work well for locating stains on carpet and furniture, locating leaks on AC systems, and for identifying antique Uranium or Vaseline Glass. This light is a Dual-Fuel light. It accepts CR123A Batteries or 18650 Li-Ion. You'll probably get a brighter light with the CR123A, but the 18650 is rechargeable and will probably give you a longer run time and is more than sufficient for most applications. A+ for this light.
K**V
Lovely little blacklight
Very reliable. It's nice there's a focus on it so I can either have it wide or narrow depending on how far I'm looking for something. Simple on and off switch on back. No nonsense SOS modes or brightness levels to deal with. I had a previous ultra fire light a few years before this one and they have improved a lot since then, funny thing is this takes the same batteries as well. This does a better and brighter job than the old version.
S**K
great light
I use this for curing resin, works great
B**T
Not that strong of UV even though it says it. Does not include batteries
So I bought the UV beast. I love it. It's super strong. It's not adjustable like this one. The UV beast is pretty big and I was looking for something a little bit smaller. This one has over 500 nanometers. The other one has 495. I do windshield repair for a living for cars. I have a 12 volt plug-in lamp works great Kia's resin in about 20 seconds. I know these flashlights can't be as strong as a plug-in lamp for curing. I really wanted a flashlight that I could use just for small simple repairs that I could have in my little side pouch. But this lamp isn't strong. It would not cure a small chip even with holding the flashlight for over a minute. Whereas the UV beast would cure in about 30 to 40 seconds. Don't buy it weak
M**N
Simple 18650 uv
I wanted a cheap, single led, uv light for disc golf. The multi light affairs seem weak. I have a charger and a bunch of 18650 batts so this was perfect. It will be great for throwing at night or finding discs at night that I lost earlier. It charges my Eclipse discs in a snap. Noticed someone complained about batteries down below. You can get cr123a batteries at almost any grocery store and two should work fine . These are not rechargeable and therefore fairly inexpensive. I think they have less voltage and last a bit, while an 18650 will have higher output for shorter periods....at least I think that's how it works.
A**M
متج جيد ولكن
لا يوجد بطارية تتوافق مع المنتج في السوق المحلي ، يرجى عرض بطاريات مناسبة للمنتج لنتمكن من شراءها . المنتج لا يحتوي على شاحن .
R**S
Works exactly as expected - great
I got this light to see how much of a crime scene the cats have left around the house. This light shows there’s a lot of crime in this house.
O**E
NO BATTERIES INCLUDED
Product does not come with the batteries required to operate it.
R**S
10/10
This thing is bright!!! Great for uranium glass hunting
M**I
البطاريه ليست معه
مافي معاه بطاريه
Trustpilot
1 month ago
4 days ago