Nuwai TM-311H 0.5W 2xAAA Flashlight, retail $20.99 (www.amondotech.com)
Manufactured by (www.nuwai.com.tw)
Last updated 02-01-07

The Nuwai TM-311H 0.5W 2xAAA Flashlight (hereinafter just called a "flashlight") is a very small handheld flashlight that you can stuff in your pocket or a purse to provide light whenever you need it.

It features a 0.5 watt high-output LED, and feeds from two AAA cells. These are held in an almost all-aluminum housing; this was shown to be waterproof - not just water-resistant. The tailcap leaks though. :(

Because it is powered by two AAA cell, there is a DC-DC inverter in the head to boost the 3.0 volts from the batteries to the 3.6 to 4.0 volts the LED needs.


To use this flashlight, feed it first (see below), and then you can go to town.

Twist the tailcap clockwise (as if tightening it) to turn the flashlight on, and twist the tailcap counterclockwise (as if loosening it) to turn the flashlight off. This is continuous or hands free mode.

Press the tailcap in and hold it that way for as long as you need light; release it to not get light. This is momentary or signalling mode.

This flashlight has a LOTC (Lock Out TailCap). To engage this feature, unscrew the tailcap 1 1/2 turns from when the flashlight first turns off. The button will now no longer function, so the light will not inadvertently turn on when packed for storage or for a trip.
To disengage the LOTC and use the flashlight normally, screw the tailcap back on just under 1 1/2 turns.

To change the batteries in this flashlight, unscrew and remove the tailcap, throw it in the {vulgar term for toilet}, yank that silver handle on the front of the cistern down, and flush it away...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.

Tip the barrel into your hand, and dispose of or recycle the used AAA cells that come out as you see fit.

Slip two AAA cells in the barrel button-end (+) positive first, and screw the tailcap back on. Back it off a bit when your flashlight springs to life - you don't want to waste a brand spanken new battery ya know.
Aren't you glad you didn't flush that tailcap away now?

Current usage measures 156mA on the AAA cells that were supplied with it.

Looking "down the barrel", where you can see the LED and reflector.

The flashlight is at very minimum reasonably durable. It withstood my smack test (ten whacks against the corner of a concrete stair; five against the side of the bezel and five against the side of the tailcap), and I found the expected amount of very minor denting on the tailcap and bezel where it was struck. No optical or electrical malfunctions were detected.

The flashlight has a black Type II anodizing on it. I was able to scratch through the finish with the blade of a Swiss army knife with some difficulty. It is more than reasonably durable though. So it should stay looking new for a long time, even if it goes up against keys, tools, or other flashlights during storage or transportation.
Would I really try to cut up a brand spanken new flashlight?
You bet your sweet patootie I would, if it's in the name of science.

This flashlight is water-resistant, but not fully submersible. When the tailcap was removed and the flashlight was relieved of its batteries, the flashlight passed that dreadful suction test I administered to it. No air leakage was detected. Some air leakage occurred at the tailcap though. But you need not be concerned about using it in rain or snow, and shallow-water landings should not kill it either. And if the dog takes a leak on it, just douche it off with the garden hose - good as new. Try not to drop it into deeper pee - er - I mean - water and you ought to be alright.

There is a spring steel clip attached to the side of this flashlight; this allows for "bezel-up" carry. This clip is fairly stiff, and has a good grip, so it should attach securely to just about any fabric.
The clip can be removed and replaced the other way for bezel-down carry if desired.

The beam produced by this flashlight is a pure, slightly bluish white. If you showed the beam to a group of people and asked them to tell you what color they saw, I guarantee everybody would holler out "WHITE!!!".

The LED in this flashlight isn't a Luxeon, but it isn't a standard 5mm either. Upon closer examination, there are six bond wires leading into the die (light-emitting region), indicating it may be one of those 100mA high-powered LEDs that can be found at PowerLEDs (formerly ISP Korea).

The lens is plastic. Polycarbonate to be specific, but still plastic. I tried to cut through it with a knife, and was successful.
O, the things I do to poor innocent defenseless helpless little flashlights in the name of science.

There is no knurling or other texturising anywhere on this flashlight, so it may feel a bit slippery during use.

Beam photo at ~12".
Measures 238,000mcd on a Meterman LM631 light meter.

Spectrographic plot
Spectrometer plot of the LED in this flashlight.
Ocean Optics USB2000 Spectrometer on loan from WWW.TWO-CUBED.COM.

Test unit was sent by Wayne of Amondotech, and was received on the afternoon of 01-21-05.

UPDATE: 00-00-00



    PRODUCT TYPE: Very small handheld flashlight
    LAMP TYPE: Unknown brand 0.5 watt LED
    No. OF LAMPS: 1
    BEAM TYPE: Medium spot with wide corona
    SWITCH TYPE: Twist tailcap continuous, push tailcap momentary
    BEZEL: Metal; plastic window protects LED and reflector
    BATTERY: 2xAAA cells
    WATER RESISTANT: Yes - splash-resistant at minimum
    WARRANTY: 1 year


    Star Rating

Nuwai TM-311H 0.5W 2xAAA Flashlight * www.amondotech.com

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