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365nm UV Light Blacklight Keychain - Image One

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Optics & Lasers > LEDs, Bulbs & Flashlights

365nm UV Light Blacklight Keychain

Item#: 17133   4.5 star rating 3 customer reviews
Price: $1.95 /each
$1.89 /each (buy 10+)
$1.79 /each (buy 100+)
IN STOCK Ships in 1-2 work days
from our Lakewood, CA warehouse.
Add to cart to see shipping cost.

We have 226 pcs in stock.

This compact and affordable 365nm UV ultraviolet keychain flashlight features 1 LED UV light and can be used for a number of applications.  Use it for making some* fluorescent rocks glow, for ID verification, identifying scorpions while embarking on desert expeditions, hotel sanitation checks, detecting counterfeit money, and more.  Slip it on your keychain and have a handy portable UV light with you wherever you go!

*Not all fluorescent rocks will glow when exposed to 365nm UV light. In the video to the left you can see: 1) Willemite which glows green and 2) Wernerite which glows yellow. Some of the other rocks that may glow under 365nm light are: Flourite, Sodalite, Calcite, Aragonite, Scapolite, Opal, Ruby, etc.


  • Compact 365nm UV ultraviolet keychain flashlight with 1 UV LED light
  • Center wavelength: 365nm
  • Powered by one CR2032 battery (included)
  • Measures approximately 1.5 in (38mm) x 1 in (25mm) x 0.375 in (9mm)
  • Simple on/off and push-button switch
  • Good for a variety of applications, including lab experiments, science projects and classroom demonstrations

Note: Avoid direct exposure to eyes--this product should not be used by children.

18 +
Approx. Ship Size:
1.75 x 1.00 x 0.25 inches
4.45cm x 2.54cm x 0.64cm
0 lb 1 oz
0.01 kg

Small parts. Not for children under 3 yrs.

Customer Reviews

5 star rating  Tiny light has power
Jill from USA, Michigan, Ontonagon
All ages find this tiny light amazing when viewing UV-responsive stones. I am totally satisfied with the product. There have been no duds in the hundreds I have purchased.

5 star rating  Worked well to give away with yooperlites!
Evan from Michigan
They work well in the dark and are as bright as can be expected from one diode on a keychain ring. True 365nm as well! Plz keep in stock and I will continue purchasing

3 star rating  Ok
Lisa from United States, Wisconsin, Two Rivers
These are not the brightest but in a pinch you can attempt to show someone a fluorescent sodialite

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