Crystal LED Glow Keychain, retail $4.99 (
Manufactured by (Unknown) for Faucet Queens (
Last updated 02-05-06

I saw this clever little item hanging on the shelf while I was looking for a funnel for my housemate's CPAP machine. I was attracted to it because I saw it read "Bright Blue LED Light!" on the front of the package.

This is a novelty keychain that has a plastic "crystal" on the end which glows bright blue when you give the unit a twist. It has a 5mm (T1 3/4) blue LED near the bottom of a transparent plastic "crystal", and is powered by three AG3 (LR41) button cells held in its metal body.


This product is ready to use as soon as you remove it from the package. Cut down one side of the package with a razor blade, a knife, or a pair of household scissors; and remove the unit.

Grasp the metal portion with one hand, grasp the transparent "crystal" with the other, and apply a firm but gentle clockwise twisting motion. This turns it on.

Do the same thing, except twist counterclockwise, to turn the unit back off.

Keys can be affixed to it by means of a medium-sized split ring, or it can easily be affixed to an existing keychain by means of a spring-loaded "lobster claw" clasp.
These keychain accessories are on a swivel, so you cannot get this device tangled up.

To change the batteries, turn the unit upside-down (so the tip of the "crystal" faces down), and unscrew the product until the two halves come apart. Set the metal part (with the keychain stuff on it) aside.

Tip the three used AG3 (LR41) cells out of the body you're still holding into your hand, and recycle or dispose of them as you see fit. Be sure the little black O-ring that *MAY* be on the first cell does not fall off and become lost or end up in the garbage can or battery reclamation box.

Stack three AG3 or LR41 button cells on a table, counter, or desk on top of one another, so their flat-ends (+) positives face down.

Lower the barrel of the unit directly over them. Then you can either pinch your thumb & forefinger around the bottom as you lift and flip it over (so the batteries don't fall right out), or slide a business card underneath, and then lift the barrel & card at the same time and flip it over.

Then just screw the tailcap back on firmly.
If you had the little O-ring come out, lay it on top of that last cell before you screw the tailcap back on.

Current usage measures 34.4mA on my DMM's 400mA scale.

This product appears to be at least somewhat splatter-resistant, but I do not for one second believe it is submersible. So water, milk, diet Pepsi, coffee, urine, root beer, or other liquids could get inside. So please try not to drop it in creeks, rivers, ponds, lakes, oceansides, docksides, puddles of mustang pee, glasses of milk, slush piles, mud puddles, tubs, root beer floats, toilet bowls, cisterns, sinks, cups of coffee, fishtanks, dog water dishes, old yucky wet mops, or other places where water or water-like liquids might be found. A little rain or snow probably wouldn't hurt it though, so you need not be too concerned about using it in moderately bad weather.

If it fell in water and you suspect it got flooded, disassemble it as you would for a battery change, dump out the water if necessary, and set the parts in a warm dry place for a day or so just to be sure it's completely dry inside before you reassemble and use it again.

If it fell into seawater, got thrown into a glass of milk, or if somebody or something peed on it, douche all the parts out with fresh water before setting them out to dry. You don't want your Crystal LED Glow Keychain to smell like seaweed, milk, or piss when you go to use it next. Besides, salt (from seawater or urine), lactic acid (from moo juice), or sugar (from root beer) can't be very good for the insides.

Photograph of the unit, illuminated of course.

Test unit was purchased in the automotive section of Safeway on 02-03-06.

UPDATE: 00-00-00



    PRODUCT TYPE: Glowing keychain
    LAMP TYPE: 5mm blue LED
    No. OF LAMPS: 1
    SWITCH TYPE: Twist unit on/off
    CASE MATERIAL: Metal and plastic
    BEZEL: Metal; LED protected by a plastic "crystal"
    BATTERY: 3xAG3 (LR41) button cells
    WATER RESISTANT: Sprinkle-resistant at minimum
    ACCESSORIES: 3 batteries, swivel, split-ring, lobster claw clasp
    WARRANTY: Unknown/not stated


    Star Rating

Crystal LED Glow Keychain *

Do you manufacture or sell an LED flashlight, task light, utility light, or module of some kind? Want to see it tested by a real person, under real working conditions? Do you then want to see how your light did? If you have a sample available for this type of real-world, real-time testing, please contact me at

Please visit this web page for contact information.

Unsolicited flashlights appearing in the mail are welcome, and it will automatically be assumed that you sent it in order to have it tested and evaluated for this site.
Be sure to include contact info or your company website's URL so visitors here will know where to purchase your product.

WHITE 5500-6500K InGaN+phosphor 
ULTRAVIOLET 370-390nm GaN 
BLUE 430nm GaN+SiC
BLUE 450 and 473nm InGaN
BLUE Silicon Carbide
TURQUOISE 495-505nm InGaN
GREEN 525nm InGaN 
YELLOW-GREEN 555-575mn GaAsP & related
YELLOW 585-595nm
AMBER 595-605nm
ORANGE 605-620nm
ORANGISH-RED 620-635nm
RED 640-700nm
INFRARED 700-1300nm
True RGB Full Color LED
Spider (Pirrahna) LEDs
True violet (400-418nm) LEDs
Agilent Barracuda & Prometheus LEDs
Oddball & Miscellaneous LEDs
Programmable RGB LED modules / fixtures
Where to buy these LEDs 
Links to other LED-related websites
The World's First Virtual LED Museum
Legal horse puckey, etc.
LEDSaurus (on-site LED Mini Mart)

This page is a frame from a website.
If you arrived on this page through an outside link,you can get the "full meal deal" by clicking here.