Glo-Toob Lithium, retail $39.95
Manufactured by GLO-TOOB (www.glo-toob.com)
Last updated 11-11-19
The Glow-Toob Lithium is an innovative lighting device, born and raised in South Africa. It is composed of an aluminum core surrounded by a tough, clear epoxy compound; and features 3 bright blue LEDs in the core that shine upward onto a conical reflector to disperse the light in a true toridal (doughnut-shaped) pattern.
Glo-Toobs are designed not to be a flashlight, but rather as a replacement for chemical lightsticks. They're powered by a single CR123A lithium cell, and shine for up to 100 hours on a single battery.
SIZE:
Glo-Toobs are easy to use. This one has 11 modes; repeatedly pressing and then releasing the tailcap button cycles through them (please see farther down this web page to see a list of them).
The clickie tailcap is fine if you just want to use the Glo-Toob for outdoor adventures, but if you want to take it diving with you, then please affix the twisty tailcap.
You can use them rain or shine, and even take them diving with you if that's what turns your crank.
Changing the battery is easy enough: hold the Glow-Toob Lithium in one hand, and unscrew the knurled black thing at the end with the other. Drop in a new CR123A cell, button-end (+) first, and screw the tailpiece back on. Tighten it to firm finger-tightness, and dispose of the old battery properly.
Glo-Toobs are made of thick aluminum and a transparent, slightly tinted epoxy resin. They're about as tough as anything can get. There have been reports of an original Glow-Toob being run over by a city bus, and it worked just fine afterward. Best guess is that the only damage you'll ever see might be a very tiny dent or ding on the side of the body if it were to fall onto concrete from a significant height. I don't think you'll ever actually damage one of these things to the point of failure or diminished light output unless you stick the poor thing in a sandblaster and let the machine run for awhile.
The Glow-Toob Lithium is depth rated to 300 feet; though they've been successfully tested at depths of 11,500 feet! That would crush almost any other light out there, including most metal-bodied lights. But not the Glo-Toob. So don't be afraid to hook them to your scuba gear, take them on boat trips, or take them hiking & camping. And if it falls in the toliet, just douche it off and it'll be good as new! The only water-related advisories given are to not try to change the battery underwater, and to rinse the Glow-Toob Lithium with fresh water after an outing in seawater. You should also be careful when turning Glo-Toobs on underwater, that you turn the ring and not the knurled tailpiece.
A beefy O-ring keeps water, mud, snow, slush, dog pee, and other nasties outside where they belong.
(Taken right off the web page that this product is on:)
11 Programmable modes
Equal Flash
Beacon Strobe
Fast Strobffe
Slow Strobe
SOS
Pulse
Half Flash
Bounce
Ramp Up
100% Constant ON
25% Constant ON
The aluminum "core" in the center of the Glow-Toob Lithium tapers off at the bottom, and all of the light comes out comes from this tapered area. As the beam photo below shows, this results in a true 360° radiation pattern along the horizontal axis; the way the product is designed also gives good visibility when viewing the unit from above or below. Only if you look straight down on top of a Glow-Toob Lithium that's standing upright will you no longer see its light directly; though whatever surface you stood it up on will glow around the vicinity of the Glo-Toob.
They come in four colors: red, amber, green, and blue. I'm testing the blue version.
Glo Toob Lithium lit up in constant-on mode, illuminating a wall.
Spectrographic analysis of the LEDs in the Glo-Toob Lithium.
Spectrographic analysis of the LEDs in the Glow-Toob Lithium spectrometer's response narrowed to a band between 460nm and 470nm to pinpoint emission peak wavelength, which is 463.850nm.
The raw spectrometer data (tab-delimited that can be loaded into Excel) is at glo-toob.txt
Brief video on YourTube showing that the Glo-Toob Lithium is defective right out of the package.
I even connected an AA cell in series with its CR123A cell in order to rule out an undervolt failure mode.
This video is 192.9774793237966 megabytes (209,939,428 bytes) in length; dial-up users please be aware.
It will take no less than nine hundred sixty five minutes to load at 48.0Kbps.
TEST NOTES:
Test unit was sent by J.P. of London, UK and was received on the afternoon of 05-07-15. Unit needs to be returned, so the, "" will be appended to its listings on this website, denoting the fact that the the unit needs to be sent back to London and that it will be spared, "The Loo Test" and, "The Smack Test" as I'm certain that Jahn will want to receive it with no dirty lavatory water & desiccated rat pellets in the barrel and no dents or dings in its body.
Product was defective upon arrival, so that dreadful, "" will be used at once and no video of its 11 modes can be made.
UPDATE: 00-00-00
PROS:
Very unique product.
Virtually indestructible.
Waterproof and submersible to no less than 300 feet.
Battery isn't that expensive or hard to find, and lasts up to 100 hours.
Radiates all around, so you don't have to "aim" it.
Drives its LEDs gently, so they'll last a very long time.
NEUTRAL:
CONS:
Small enough that you could lose it if you're careless.
It is possible the battery might not be available *everywhere*.
A bit pricey, so try not to lose it. :)
MANUFACTURER: Glo-Toob
PRODUCT TYPE: Multimode marker light
LAMP TYPE: LED
No. OF LAMPS: 3 to 5, depending on color
BEAM TYPE: 360° toroidial (doughnut-shaped) illumination
REFLECTOR TYPE: Conical brushed metal
SWITCH TYPE: Pushbutton on/mode change/off on tailcap
CASE MATERIAL: Epoxy & metal
BEZEL: Metal; LED & reflector protected by glass window
BATTERY: 1x 18670 Li:ION cell or 2x lithium CR123A cells
CURRENT CONSUMPTION:
WATER- AND BIRD S**T-RESISTANT: Yes
SUBMERSIBLE: Yes, to at least 300' (91.44M)
ACCESSORIES: Battery, split ring, lanyard, twist tailcap
SIZE: 66.80mm L x 19mm Dia.
WEIGHT: 36.850g (1.3 oz.) incl. battery
COUNTRY OF MANUFACTURE: South Africa
WARRANTY: 1 year
PRODUCT RATING:
Product cannot be rated because it was defective right from the get-go.
GLO-TOOB LITHIUM *
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" will be appended to its listings on this website, denoting the fact that the the unit needs to be sent back to London and that it will be spared, "The Loo Test" and, "The Smack Test" as I'm certain that Jahn will want to receive it with no dirty lavatory water & desiccated rat pellets in the barrel and no dents or dings in its body.
" will be used at once and no video of its 11 modes can be made. 
