LED Club Keychain Flashlight, retail $1.99 (www.wallgreens.com)
Manufactured by Loo Loo Enterprises (www.ledclub.com)
Last updated 12-13-08

This is a small, inexpensive keychain flashlight that you might find in register displays at such stores as Bartells, Wallgreens, and Right Aid.

You can affix it to your keyring or just stuff it in your pocket.

It comes with a variety of LED colors; not just blue-green like the one on this web page.


This flashlight is easy to use. Just slide the switch on the top of the body forward (toward the LED) to turn it on. Slide the switch backward (toward the tail-end) to turn the flashlight off. Yes, it really is as easy as that.

There is no momentary or signalling mode available on this flashlight; please do not look for or expect to find one.

This flashlight uses two CR2016 lithium coin cells for power. Since the small screwdriver set I use for changing batteries in flashlights like this has not yet turned up since I moved on 10-11-04, I cannot yet tell you how to change the batteries here.

This flashlight appears at least reasonably durable. This is aided signifigantly by its small size. I whacked it pretty hard several times against the side of a metal computer case, and caused no physical, electrical, or optical damage.

It is *not* waterproof or submersible. No environmental protection (such as O-rings) is evident, and air readily passes through the case. So please try not to drop it in creeks, rivers, ponds, lakes, oceansides, docksides, puddles of rat pee, slush piles, mud puddles, tubs, toilet bowls, cisterns, sinks, fishtanks, dog water dishes, 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 mildly 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 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 flashlight to smell like seashells or piss when you go to use it next. Besides, salt (from seawater or pee-pee) can't be very good for the insides.

Although this is labelled as a green flashlight, this actually has a blue-green LED in it. The dominant wavelength (where you would point to on a color chart) appears to be approximately 501nm. The LED used in this flashlight has a dual-bond design, so I know right away it isn't a Cree Corp. component. And since the bond wires are attached at the sides of the die and not at the corners, I think I can rule out Nichia too.

There is a swivel attachment on the keychain; this swivel appears to be a bit stiff on my sample. Whether it is like this on most others remains to be seen.

Beam photograph (blue-green) at ~12".
Measures 17,830mcd on a Meterman LM631 light meter.

Beam photograph (blue) at ~12".
Measures 5,620mcd on a Meterman LM631 light meter.

Spectrographic plot
Spectrographic analysis of the LED in the blue-green flashlight.

Spectrographic plot
Spectrographic analysis of the LED in the blue flashlight.
USB2000 spectrometer graciously donated by P.L.

Unit was purchased at a local Wallgreens on approximately 12-01-04.

UPDATE: 00-00-00



    MANUFACTURER: Loo Loo Enterprises
    PRODUCT TYPE: Keychain flashlight
    LAMP TYPE: 5mm blue-green LED
    No. OF LAMPS: 1
    BEAM TYPE: Medium flood
    SWITCH TYPE: Slide on/off on top of unit
    BEZEL: None
    BATTERY: Two CR2016 cells
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER RESISTANT: Splash-resistant at best
    ACCESSORIES: Two CR2016 cells
    WARRANTY: Unknown/not stated


    Star Rating

LED Club Keychain Flashlight * www.ledclub.com

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