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expirediconian | Staff posted Dec 2, 2025 4:40 PM

DARKBEAM 365nm UV Flashlight LED Black Light (USB-C Rechargeable)

$7.00

$14

50% off
Amazon
58 Comments
97.7K Views
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Deal Details
Darkness Beam via Amazon has DARKBEAM 365nm UV Flashlight LED Black Light (USB-C Rechargeable) on sale for $13.99 - $7 (apply promo code HYOIM6RA at checkout) = $6.99. Shipping is free with Prime or on $35+ orders.
  • Note: Promo codes are typically for one-time use and don't always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.
Thanks to Deal Editor iconian for finding this deal.

Editor's Notes

Written by megakimcheelove | Staff

Original Post

Written by iconian | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Darkness Beam via Amazon has DARKBEAM 365nm UV Flashlight LED Black Light (USB-C Rechargeable) on sale for $13.99 - $7 (apply promo code HYOIM6RA at checkout) = $6.99. Shipping is free with Prime or on $35+ orders.
  • Note: Promo codes are typically for one-time use and don't always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.
Thanks to Deal Editor iconian for finding this deal.

Editor's Notes

Written by megakimcheelove | Staff

Original Post

Written by iconian | Staff

Community Voting

Deal Score
+100
Good Deal
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Top Comments

DealSeekerDeal
2.8KComments
400Reputation
365nm is often considered superior because it produces less visible light, making the faint glow of urine stains more distinct. Stains will appear as a pale yellow or greenish color under the light. Specific wavelengths, often in the blue-violet range (\(415-490\) nm), can cause semen stains to fluoresce (glow) and be visualized. A 395 nm wavelength is best used for applications like creating blacklight effects, curing certain UV resins and adhesives, and detecting fluorescence for things like counterfeit money, animal stains, or antique glass.
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qualitypixel
56Comments
14Reputation
Yep. Also good for looking for cool rocks, scorpions, and other weird bugs. I've used my UV lights mostly for hunting for cool rocks.

Looks like this darkbeam does not include safety glasses. Get some as the rays are harmful, especially for your eyes. 3M Safety Glasses Solus 1000 Series block 99.9% UV rays but you can still see anything that fluoresces under the UV.
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IndigoWinter2667
2.7KComments
767Reputation
Scorpions also glow in the dark.
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58 Comments

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Dec 2, 2025 8:41 PM
218 Comments
Joined Aug 2022
NervousSardine690Dec 2, 2025 8:41 PM
218 Comments

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I've got this. It actually cures PCB masking unlike the cheaper UV torches.
2
Dec 2, 2025 10:07 PM
620 Comments
Joined Jan 2019
FeistyTest4005Dec 2, 2025 10:07 PM
620 Comments
Quote from DealSeekerDeal :
365nm is often considered superior because it produces less visible light, making the faint glow of urine stains more distinct. Stains will appear as a pale yellow or greenish color under the light. Specific wavelengths, often in the blue-violet range (\(415-490\) nm), can cause semen stains to fluoresce (glow) and be visualized. A 395 nm wavelength is best used for applications like creating blacklight effects, curing certain UV resins and adhesives, and detecting fluorescence for things like counterfeit money, animal stains, or antique glass.
Which is more effective at finding cool glowy rocks?
Pro
Dec 2, 2025 10:27 PM
1K Comments
Joined Nov 2015
HuntingHumans
Pro
Dec 2, 2025 10:27 PM
1K Comments
Just stopped by for the comments lol
1
3
Dec 2, 2025 10:48 PM
475 Comments
Joined Mar 2019
DJ18Dec 2, 2025 10:48 PM
475 Comments
Quote from RyzenPrime :
don't waste your $$$
What's a better UV flashlight? Post one up for us then
1
Dec 2, 2025 11:18 PM
233 Comments
Joined Jun 2007
CahlheimDec 2, 2025 11:18 PM
233 Comments
I see that it says built in rechargeable battery, but any chance this thing has an easily removable cell?
Dec 2, 2025 11:46 PM
6.9K Comments
Joined Jul 2007
skwishbotDec 2, 2025 11:46 PM
6.9K Comments
Shouldn't this be called a flashnolight?
1
Dec 3, 2025 12:01 AM
56 Comments
Joined Jul 2015
qualitypixelDec 3, 2025 12:01 AM
56 Comments

Our community has rated this post as helpful. If you agree, why not thank qualitypixel

Quote from douflag :
Will this be good for curing certain liquids? Like window chip filler?
Yep. Also good for looking for cool rocks, scorpions, and other weird bugs. I've used my UV lights mostly for hunting for cool rocks.

Looks like this darkbeam does not include safety glasses. Get some as the rays are harmful, especially for your eyes. 3M Safety Glasses Solus 1000 Series block 99.9% UV rays but you can still see anything that fluoresces under the UV.
7

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Dec 3, 2025 1:10 AM
43 Comments
Joined Aug 2018
wowcandaceDec 3, 2025 1:10 AM
43 Comments
Worth it when traveling.
2
Dec 3, 2025 1:14 AM
52 Comments
Joined Apr 2019
BeefaloafDec 3, 2025 1:14 AM
52 Comments
This reveals frightening things
1
2
Dec 3, 2025 1:39 AM
71 Comments
Joined Feb 2021
GreenRose9133Dec 3, 2025 1:39 AM
71 Comments
Quote from scdiamond :
for hotel rooms?
One of the uses. The walls are filthy. Handprints everywhere.
1
2
Dec 3, 2025 1:42 AM
71 Comments
Joined Feb 2021
GreenRose9133Dec 3, 2025 1:42 AM
71 Comments

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Great for finding antique Uranium glass.
4
Dec 3, 2025 5:27 AM
1.6K Comments
Joined Oct 2004
RegrooverDec 3, 2025 5:27 AM
1.6K Comments
Quote from SevenDs :
Can someone remind me is 365 or 395 better, thanks.
365 is better for geologists... and possibly scorpion hunters
Dec 3, 2025 8:38 AM
604 Comments
Joined Feb 2020
MultiMatrixDec 3, 2025 8:38 AM
604 Comments
Any chance there's going to be a discount for the larger more powerful UV flashlights from this brand?
Dec 3, 2025 10:34 AM
37 Comments
Joined Jun 2021
TealGazelle3467Dec 3, 2025 10:34 AM
37 Comments
Quote from GreenRose9133 :
Great for finding antique Uranium glass.
This is what I use it for. I bought the two-pack with the 365nm and 395nm. I shine everything at antique stores. I just found a 1939 World's Fair vinegar jar that glowed brightly on Saturday.

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Dec 3, 2025 2:14 PM
839 Comments
Joined Dec 2022
FairTeam939Dec 3, 2025 2:14 PM
839 Comments
Tried several times to get the Promo Code to work by refreshing et al, still doesn't work.
Anyone know how to get the Promo Code to work at checkout? thanks.

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