1 W LED FLASHLIGHT
1W LED Flashlight, retail $3.00 (URL not known)
Manufactured by (Unknown)
Last updated 04-10-20
When you turn the 1W LED Flashlight on, don't get all excited and $#¡7 all over yourself.
No really, don't. 
The 1W LED Flashlight is a fairly dim (for a higher-powered) LED flashlight that comes in a plastic body with what appears to be a medium-powered phosphor white LED at the bottom of a mirror-smooth reflector.
It operates from a single AA cell, and has a very short lanyard attached to the tailcap.
SIZE
To turn on the 1W LED Flashlight, press the rubbery button on the tailcap until it clicks.
To neutralise the flashlight, just perform the exact same action.
To change the AA cell in the 1W LED Flashlight when it peters out, unscrew & remove the tailcap, and set it aside.
Tip the tired old AA cell out of the barrel, and dispose of or recycle it as you see fit.
Insert a new AA cell into the barrel, orienting it so that the button-end (+) positive goes in first.
Finally, screw the tailcap firmly back into place.
The 1W LED Flashlight appears to be durable enough that it shouldn't just fall apart through casual handling.
After administering The Smack Test (ten smacks onto concrete; five against the side of the tailcap and five against the side of the bezel) on it, surprisingly, the damned thing still worked (I expected the tailcap to pop off but it stayed put!)
There is the expected scuffing on the side of the tailcap and bezel where it was struck, and only a minor optical change was noted -- on the edge of the beam, there is a hotspot where none existed before.
The purpose of The Smack Test isn't to see how badly damaged the external parts of the flashlight would become; it gauges how well (or how poorly) the LED and driver circuit handles the instantaneous G-forces encountered during this test. The 1W LED Flashlight handled this test surprisingly well.
Water-resistance is marginal at best; when the tailcap was removed and the barrel was suctioned and when the tailcap itself was suctioned, some air leakage was detected. They weren't HUGE leaks like I've seen in other flashlights so shallow-water landings should not kill it if you fish it out of the water right away, and using the light in light to light/moderate rainfall should not do it in either.
If you can find this light for two or three dollars, I guess it isn't that big a waste -- but you'd never, EVER want to pay more than $3 for it!!!
Beam terminus photograph on a wall at 12" (I currently do not have a calibrated test target).
Measures 51,700mcd on an Amprobe LM631A light meter.
Remeasured at 60,300mcd after smacking it in my hand several times caused a noticeable increase in intensity.
Beam terminus photograph on a wall at ~8 feet.
Spectrographic analysis of the LED in this flashlight.
Spectrographic analysis of the LED in this flashlight; spectrometer's response narrowed to a band between 440nm and 460nm to pinpoint native emission peak wavelength, which is 451.180nm.
The raw spectrometer data (tab-delimited that can be loaded into Excel) is at 1wled.txt
USB2000 Spectrometer graciously donated by P.L.
A beam cross-sectional analysis would normally appear here, but the ProMetric System
that I use for that test was destroyed by lightning in mid-July 2013. 
TEST NOTES:
Test unit was purchased at the Happy Market, located at 4605 E. Shields Ave. in Fresno CA. USA sometime in mid-2019.
UPDATE: 00-00-00
PROS:
Uses a battery type that is common and not too expen$ive
NEUTRAL:
CONS:
Dim, dim, dim! What went wrong? (I've seen single 5mm LED lights way outperform this one!)
Feels a bit cheap or "chintzy" in the hand
Beam seems to be a bit on the narrow side for day-to-day use
Switch / tailcap contact appears to be intermittent
MANUFACTURER: Unknown
PRODUCT TYPE: Small LED flashlight
LAMP TYPE: Mid-powered phosphor white LED
No. OF LAMPS: 1
BEAM TYPE: Medium spot
REFLECTOR TYPE: Mirror-smooth
SWITCH TYPE: Pushbutton on/off on tailcap
CASE MATERIAL: Plastic with internal metal sleeve
BEZEL: Plastic; LED & reflector behind transparent plastic window
BATTERY: 1x AA cell
CURRENT CONSUMPTION: 120.20mA
WATER- AND URANATION-RESISTANT: Light weather- and splatter-resistance at maximum
SUBMERSIBLE: NO WAY HOZAY!!! 
ACCESSORIES: Small lanyard
SIZE: Unknown/not equipped to measure
WEIGHT: 43g (1.52 oz.) incl. battery
COUNTRY OF MANUFACTURE: Unknown -- though very probably China
WARRANTY: Unknown
PRODUCT RATING:
1W LED Flashlight *
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