ADVANCEDMART 3 WATT ECONO 365nm UVA LED FLASHLIGHT
Advancedmart 3 Watt ECONO 365nm UVA LED Flashlight, retail $48.99 (http://store.advancedmart.com...)
Manufactured by Ultrafire* (www.ultrafire.net) for Advancedmart (www.advancedmart.com)
Last updated 06-21-13
This 365nm UVA LED Flashlight, sold by Advancedmart, does not have a formal name that I know of, so I'll just call it a "flashlight" on this web page.
It comes in an aluminum body, has a high-powered (3 watt) UVA (ultraviolet-A) LED in its bezel (head), uses a single 18650 lithium-ion cell for power, and has a rubbery pushbutton on/off switch on its tailcap.
The battery (a 18650 Li:ION rechargeable) is not included, so you need to go out and purchase one or have one on hand before you can use this light.
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 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
* = Flashlight body is made by UltraFire (it's their WF-502B); I do not yet know how or where the modification to the high-powered UVA LED takes place.
SIZE
To use this flashlight, feed it first (see directly below), and then you can go to town.
Press the button on the tailcap until it clicks and then release it to turn the flashlight on.
Press the button on the tailcap until it clicks and then release it to turn the flashlight off.
Yes, it really is as easy as that. 
There is no momentary or signalling mode available when the flashlight is off, however, you can blink the flashlight while it is on by partially depressing the button. If you don't mind the backward or reverse feeling of this, you can blink the flashlight this way.
To change the battery, unscrew and remove the tailcap, throw it to the ground, and stomp on it with old or used bowling shoes...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.
Tip the discharged 18650 cell out of the barrel and into your hand, and recharge it as per your battery charger's instructional materials.
Insert a charged 18650 Li:ION cell into the barrel, orienting it so that its nipple-end (+) positive goes in first.
Finally, screw the tailcap firmly back on.
Aren't you glad you didn't stomp on that tailcap now?
Current usage measures 73.30mA on my DMM's 400mA scale.
The flashlight appears to be reasonably sturdy. Ordinary flashlight accidents should not be enough to do it in. However, since this is a loaner, I will not perform the more abusive testing on it.
There are three bands of knurling (diamond-shaped texturising) milled into the barrel, tailcap, and barrel, so retention (the ability to hold onto the flashlight when your hands are cold, wet, or oily) shouldn't be much of an issue.
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!
The security stripe in a U.S. $20 bill fluorescing (glowing) when irradiated with this product.
Spectrographic analysis of the LED in this flashlight.
Same as above; spectrometer's response narrowed to a band between 365nm and 375nm to help pinpoint peak wavelength, which is 367.630nm.
The raw spectrometer data (comma-delimited that can be loaded into Excel) is at /42/365-3w.txt
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 /42/365-3win.txt
TEST NOTES:
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: 06-12-13
This product has now been packaged up for return in the very near-future, so that dreadful "
" icon will now appear next to its listings on this website, denoting the fact that I no longer have it at my disposal for additional analyses or comparisons.
PROS:
Very powerful portable UVA source
Reasonably tough & durable host body
Water-resistant construction
CONS:
Battery it needs might be a bit difficult to find offline (brick & mortar stores)
*
PRODUCT TYPE: Medium-small UVA LED light
LAMP TYPE: High-powered (3 watt) UVA LED
No. OF LAMPS: 1
BEAM TYPE: Medium-narrow spot w/ dimmer corona
SWITCH TYPE: Pushbutton on/off on tailcap
BEZEL: Metal; LED & reflector protected by plastic window
BATTERY: 1x 18650 rechargeable Li:ION cell
CURRENT CONSUMPTION: 73.30mA
WATER- AND URANATION-RESISTANT: Yes
SUBMERSIBLE: NADEVVO'!!! PATAT, 'OQQARMEY LO' HO' TEYWI' PUM VAJ UN-FLUSHED PUCHPA', GHOBE'! 
ACCESSORIES: None
SIZE: 136.0mm length, 31.50mm head dia., 24.50mm body dia.
WEIGHT: 150.70g (5.320- oz) incl. battery
COUNTRY OF MANUFACTURE: China
WARRANTY: 90 days
PRODUCT RATING:
Advancedmart 3 Watt ECONO 365nm UVA LED Flashlight * http://store.advancedmart.com...
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