Advancedmart 365nm "UFO" UVA LED Flashlight, retail $TBA (*
Manufactured by (unknown) for Advancedmart (
Last updated 06-22-13

This 365nm "UFO" UVA LED Flashlight, sold by Advancedmart, comes in a plastic & metal body, has a 365nm UVA LED, uses a pair of CR2016 lithium coin cells for power, and has a momentary pushbutton switch on its upper surface.

The UVA ("ultraviolet type A" or "longwave ultraviolet") radiation emitted by this product is useful in many ways. Let's just name a few of them off from memory.
  • Detecting uranation (piss), spooge (sperm), perspiration, saliva, or other bodily fluids on fabrics
  • Detecting repairs of antique glass articles -- repairs will "glow"
  • Determining where Fido or Fluffy was bad
  • Activation of fluorescent inks/dyes (such as "blacklight" posters)
  • Charging glow-in-the-dark fishing bait -- charging *ANY* glow-in-the-dark material actually
  • Checking money, credit card and ID cards for security features only visible under UVA radiation

* Product is not yet on the AdvancedMart website, so this URL simply leads to their front door.


To use this flashlight, press & hold down the button on the upper surface of the product.

Release the button to neutralise it.

To change the batteries, unscrew the screws on the upper surface of the body using a small phillips screwdriver (the 00 with a 1.40mm shaft diameter from my set of jeweller's screwdrivers did the trick here) and remove them. They're vacuumably small (though not so small as to be truly fiddly), so set them somewhere where they won't just roll off that surface, fall into the rug, and later fall prey to the hungry, hungry vacuum cleaner.

Lift the chrome outer ring plus the black top plate off, carry them to any set of conveniently-placed train tracks, gently set them on one of the rails, and patiently wait for the 5:00 express to roar by -- subsequently destroying them...O WAIT!!! YOU'LL NEED THOSE!!! So just set them aside instead.

Gently remove the two used CR2016 lithium coin cells (I say 'gently' here as in try not to bend the LED lead positioned over the topmost cell because it is an integral part of the switching mechanism), and dispose of or recycle them as you see fit. Do not use your foot to push them under the Lazy-Boy where the dog might find them, do not attempt to flush them down the loo, and for God sakes please do not throw them over the side of a dock where they might hit a flounder on the way down to the sea bottom.

Carefully slide two new CR2016 lithium coin cells into the battery chamber, orienting them so that their button-ends (-) negatives face upward. Be certain that the LED lead remains just over the topmost cell.

Place the chrome ring & black plate back in place, and screw in the screws that you removed earlier.
Aren't you glad that you didn't place those parts on the railroad tracks so that they would become destroyed by that heavy, heavy choo-choo now?

Current usage measures a rather miserly 4.40mA on my DMM's 400mA scale.

This is a rather small UVA radiation source, not a flashlight meant to be thrashed, trashed, and abused. So I won't try to drown it in the toliet tank, bash it against a steel rod or against the concrete floor of a carport in effort to try and expose the bare Metalmarineangemon - er - the bare Metaltrailmon - um that's not it either...the bare a sec here...THE BARE METAL (guess I've been watching too much Digimon again! - now I'm just making {vulgar term for feces} up!!!), let my mother's big dog's ghost, her kitties, my kitty or my sister's kitty cat piddle (uranate) on it, hose it down with my mother's gun, run over it with a 450lb Quickie Pulse 6 motorised wheelchair, stomp on it, use a medium ball peen hammer in order to bash it open to check it for candiosity, fire it from the cannoņata, drop it down the top of Mt. Erupto (now I guess I've been watching the TV program "Viva Piņata" too much again - candiosity is usually checked with a laser-type device on a platform with a large readout (located at Piņata Central {aka. "Party Central"}), with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; the cannoņata (also located at Piņata Central) is only used to sshoot piņatas to piņata parties away from picturesque Piņata Island, and Mt. Erupto is an active volcano on Piņata Island), send it to the Daystrom Institute for additional analyses, or perform other indecencies on it that a flashlight might have to have performed on it. Therefore, this section of the Advancedmart 365nm "UFO" UVA LED Flashlight's web page will seem a bit more bare than this section of the web page on a page about a flashlight.

Beam photograph at ~12".
A very large amount of the glow you see is fluorescence of the paper target.

Beam photograph on a nonreactive white wall at ~12".
Spot appears ***MUCH*** brighter than how the human eye would see it!

Spectrographic analysis
Spectrographic analysis of the LED in this flashlight.

Spectrographic analysis
Same as above; spectrometer's response narrowed to a band between 375nm and 385nm to help pinpoint peak wavelength, which is 378.810nm.

The raw spectrometer data (comma-delimited that can be loaded into Excel) is at

Spectrographic analysis
On a white background this time; spectrometer's response narrowed to a band between 375nm and 385nm to help pinpoint peak wavelength, which for reasons as of yet known has lengthened slightly to 379.530nm.

The raw spectrometer data (comma-delimited that can be loaded into Excel) is at

Spectrographic analysis
Spectrographic analysis of fluorescence of the 2009 NIA Commemorative Insulator in Uranated* Glass when irradiated with this light.

*"Uranated" - infused with an oxide anion of uranium, *NOT* piddled (peed) on.
Commonly referred to as "Vaseline glass" because it has
a distinct pale yellow-green color when not being irradiated.

Note spelling: "urAnated", not "urEnated","urInated",
"urOnated", "urUnated", or sometimes "urYnated".

The raw spectrometer data (comma-delimited that can be loaded into Excel) is at

Test unit of this plus one other UVA flashlight was sent by J.W. of Advancedmart on 05-31-13 and was received at 11:12am PDT on 06-03-13

UPDATE: 00-00-00

Very portable UVA source
Exceptionally low current usage means you can expect a longer-than-usual battery life compared with other UVA lights
Reasonably tough & durable host body

Batteries it needs might be a bit difficult to find offline (brick & mortar stores)

    PRODUCT TYPE: Small UVA LED light
    LAMP TYPE: Low-powered 5mm 365nm UVA LED
    No. OF LAMPS: 1
    BEAM TYPE: Medium-narrow spot w/ dimmer corona
    SWITCH TYPE: Momentary pushbutton on/off on upper surface of product
    BEZEL: None
    BATTERY: 2x CR2016 lithium coin cells
    SIZE: 35mm Dia. x 12.50mm deep
    WEIGHT: 22.80gg (0.80 oz) incl. batteries
    WARRANTY: 90 days


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Advancedmart "UFO" UVA LED Flashlight *

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