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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
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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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58 Comments

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Pro
Dec 2, 2025 5:44 PM
2.3K Comments
Joined Sep 2010
scdiamond
Pro
Dec 2, 2025 5:44 PM
2.3K Comments
for hotel rooms?
5
2
Dec 2, 2025 5:54 PM
151 Comments
Joined Oct 2019
NavyShop802Dec 2, 2025 5:54 PM
151 Comments

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Quote from scdiamond :
for hotel rooms?
You won't like what you find.
3
9
2
Dec 2, 2025 5:54 PM
1.8K Comments
Joined Oct 2011
avocetDec 2, 2025 5:54 PM
1.8K Comments
Quote from scdiamond :
for hotel rooms?
Yeah but sometimes there are things you're better off not seeing or knowing about.
2
2
Pro
Dec 2, 2025 6:03 PM
300 Comments
Joined Oct 2021
LivelyWallaby1957
Pro
Dec 2, 2025 6:03 PM
300 Comments
You can make your own luminol at home to play crime scene cleaner simulations.
1
2
Dec 2, 2025 6:12 PM
138 Comments
Joined Sep 2015
SevenDsDec 2, 2025 6:12 PM
138 Comments
Can someone remind me is 365 or 395 better, thanks.
Dec 2, 2025 6:19 PM
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Joined Nov 2018
IndigoWinter2667Dec 2, 2025 6:19 PM
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Quote from scdiamond :
for hotel rooms?
Scorpions also glow in the dark.
3
Pro
Dec 2, 2025 6:29 PM
2.8K Comments
Joined Sep 2011
DealSeekerDeal
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Dec 2, 2025 6:29 PM
2.8K Comments
Just Remember: Once seen - can't be forgotten....
2

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Pro
Dec 2, 2025 6:31 PM
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Joined Sep 2011
DealSeekerDeal
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Dec 2, 2025 6:31 PM
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Quote from SevenDs :
Can someone remind me is 365 or 395 better, thanks.
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.
16
Dec 2, 2025 7:06 PM
25 Comments
Joined Feb 2015
askirk87Dec 2, 2025 7:06 PM
25 Comments
Quote from IndigoWinter2667 :
Scorpions also glow in the dark.
My kids love these for seeing scorpions at night. In for one. Thanks!
1
Dec 2, 2025 7:36 PM
1.2K Comments
Joined Dec 2007
RyzenPrimeDec 2, 2025 7:36 PM
1.2K Comments
don't waste your $$$
2
1
8
Dec 2, 2025 7:55 PM
18 Comments
Joined Nov 2009
fhvac27Dec 2, 2025 7:55 PM
18 Comments

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If you have pets you can use it to see previous leaks and stains that may need to be cleaned
2
Dec 2, 2025 7:57 PM
346 Comments
Joined Apr 2017
psaturn7Dec 2, 2025 7:57 PM
346 Comments

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Quote from RyzenPrime :
don't waste your $$$
that is what we do at Slickdeals !
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Dec 2, 2025 8:27 PM
821 Comments
Joined Oct 2008
GalahadDec 2, 2025 8:27 PM
821 Comments
Quote from fhvac27 :
If you have pets you can use it to see previous leaks and stains that may need to be cleaned
I have one that never shown anything expect dust and small particles.
1
1
Dec 2, 2025 8:31 PM
2.2K Comments
Joined Feb 2005
douflagDec 2, 2025 8:31 PM
2.2K Comments
Will this be good for curing certain liquids? Like window chip filler?

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Dec 2, 2025 8:40 PM
9.9K Comments
Joined Oct 2008
DanzillaDec 2, 2025 8:40 PM
9.9K Comments
Quote from RyzenPrime :
don't waste your $$$
If you don't buy such a deal, you're LOOSING money!!!

Most of these cheap UV lights are either really weak, or aren't that great at UV and produce all kinds of visible light as well (ie purple-ish light). The fact it looks like they're using a UV pass filter is a good thing... if it's real and not just tinted to pass LF visible light as well.

EDIT: Looks like power is mentioned, in a side panel with product information. it's a 10W light with 1300mW intensity, according to the manufacturer.
Last edited by Danzilla December 2, 2025 at 12:55 PM.
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