Luma 3 in 1 Stylus™, retail $10.00 (
Manufactured by Lumastylus (
Last updated 07-11-14

The Luma 3 in 1 Stylus™ (hereafter called the, "LumaStylus") is a three-in-one product tailored for users of Blackberries, Ipads, tablet computers like this one, and other computers & devices with a touch-sensitive screen.

Not only does it function as a stylus, you can write with it and use it to find a keyhole in the dark or find that pesky deodourant cap that rolled behind the toliet without flipping on the bathroom light.

 Size of product w/hand to show scale SIZE

The product comes ready to use right out of the package.

Use the rubbery nub on one end as a stylus (as you might use your finger to tap & swipe at a touch-sensitive screen).

Remove the silvery part of the barrel and viola! There's a ballpoint pen that writes in dark blue ink.

To use the flashlight, slide that white thing on the side of the barrel near the flat-end of the product to turn it on; slide that switch the other way (toward the stylus/pen tip) to neutralise it.

To change the batteries in your LumaStylus, pull the stylus part off as though you were going to write. Set that aside.

Next, unscrew the two halves, throw the pen part into an open-pit manganese or vanadium mine and wait patiently for a piece of heavy equipment like a front-end loader or one of those gigantic dump trucks to run over and flatten it...
O WAIT! YOU'LL NEED THAT!! So just set it aside instead!!!

Tip the used LR41 button cells out of the barrel and into your hand, and dispose of or recycle them as you see fit. But before you go throwing batteries in the garbage can, pick out that thick metal disc and set that aside.

Stack three new LR41 button cells onto a flat surface like a table, desk, countertop, etc., orienting them so that their button-ends (-) negatives face up, and lower the barrel of the LumaStylus over them. Slide the whole mess to the edge, place your finger over the opening so that all those new batteries don't just fall out and clatter across the floor (or drop into the rug so that they fall prey to the hungry, hungry vacuum cleaner!) and invert (flip over) the barrel so that it's oriented mainly open-end up.

Drop in that metal disc, screw the pen portion back on, and push the stylus part back on.

Aren't you glad that you didn't huck that pen part into an open-pit mine now?

This is a computer stylus with a pen & occasional-use light, 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 slang term for multiple fudge bunnies} 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 cannoñata, drop it down the top of Mt. Erupto (now I guess I've been watching the TV program "Viva Piñata" too much again - candiosity is usually checked with a laser-type device on a platform with a large readout (located at Piñata 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 cannoñata (also located at Piñata Central) is only used to shoot piñatas to piñata parties away from picturesque Piñata Island, and Mt. Erupto is an active volcano on Piñata 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 's web page will seem a bit more bare than this section of the web page on a page about a flashlight.

Since it was a gift from a loved one, no abusive, damaging, or even potentially destructive testing will be performed on this product regardless if it was born to be nothing but a flashlight or not.

Beam terminus photograph on a wall at 12".

My Amprobe LM631A light meter (and scale, test target, and caliper) are packed for a move that is to occur on 07-12-14, so the intensity value, size, and weight will be missing for another day or two.

Spectrographic analysis
Spectrographic analysis of the LED in this stylus.

Spectrographic analysis
Spectrographic analysis of the LED in this stylus; spectrometer's response narrowed to a band between 445nm and 455nm to pinpoint native emission peak wavelength, which is 443.410nm.

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

USB2000 Spectrometer graciously donated by P.L.

A beam cross-sectional analysis would normally appear here, but the ProMetric System
that I use for that test was destroyed by lightning in mid-July 2013.

So thrilling!!
So pulse-racing!!!
Actually, it kinda "maiks" "ewe" "wontt" "tu" "kik" "ovorr" "won" "uv" "thoz" "Penile-Whear®" "liggecher-rezistent" "prizen" "commbies" "ahnd" "thenn" "pruhseed" "tu" "bete" "thuh" "livengg" "tweadle" "owt" "uv" "itt" "withh" "uhn "olde" "orr" "uzed" "harebrusch" doesn't it?

This video is 121.8963235672 megabytes (122,464,004 bytes) in length; dial-up users please be aware.
It will take no less than six hundred nine minutes to load at 48.0Kbps.
This video is definitely ***NOT*** dial-up friendly!!!

Test unit was purchased for me by my sister on 07-08-14; since it was a gift from a loved one, the "" icon will be appended to its listings on this website to denote the fact that no abusive, damaging, or even potentially destructive testing will be performed on it.

UPDATE: 00-00-00

Does what it was intended to do quite well thankyouverymuch!
Flashlight portion of the instrument appears more intense than expected


None that I've yet to discover

    MANUFACTURER: Lumastylus
    PRODUCT TYPE: Computer stylus/pen/LED flashlight
    LAMP TYPE: 5mm white LED
    No. OF LAMPS: 1
    BEAM TYPE: Medium spot with soft fall-off to perimeter
    SWITCH TYPE: Slide switch on/off on barrel
    CASE MATERIAL: Metal and plastic
    BEZEL: Plastic; LED recessed into a hosel for it
    BATTERY: 3x LR41 button cells
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER- AND URANATION-RESISTANT: Light splatter-resistance at maximum
    ACCESSORIES: 3x LR41 button cells
    WARRANTY: Unknown/not stated


    Star Rating

Luma 3 in 1 Stylus™ *

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