I ALWAYS THOUGHT A PACIFIER was something that Americans gave to their babies. It’s what we might call a dummy.
However, in a Victorian detective novel I came across the term used to describe a heavy item that a gentleman might conceal about his person, and use to “pacify” a would-be footpad, or what we might today call a mugger.
Pacifiers were made of heavy wrought iron, appropriately decorative to suit a gentleman’s style and about 20cm long, with a heavy protrusion at the business end. Today we would call it a cosh.
This shape obviously appealed to a Chinese manufacturer, and the anodised aluminium Edi-T D4 Long lamp appears to be modelled along these lines. I took one on a long-haul diving trip, and hoped that it would be more useful than merely as a weapon for dealing with footpads.
I say this because the manufacturer has made a foray into the British diving lamp market before, and it was not very successful because all of its initial production run let in water.
We even included a picture of one in our Big Gear Guide of 2009/10, but it never quite made it into the listings.
So you can guess my surprise at opening a package from Submerge, the importer of those well-regarded Italian Fa & Mi lamps, to find an Edi-T D4 Long lamp inside.
The guys at Submerge tell me that the manufacturer knows all about waterproofing now, and that double neoprene O-rings are employed. A spare set of O-rings was provided.
Submerge tells me that it pressure-tests every single lamp before letting it go out to a customer.
The lamp certainly didn’t take up much room in the bag.

Power Source
The long spindly handle from which it gets the suffix to its name conceals the battery-pack. The end unscrews (with the two O-rings present in tandem) and the battery-pack is removed and inserted in a charging-module of similar size.
Presumably this avoids the build-up of gases during charging, and the resulting potential for leaks both outwards and inwards.
A charger, not unlike that of some mobile phones, is plugged in, and a tell-tale LED changes from red to green when charging is accomplished. This takes around five hours from flat.

Switching
A magnetic switch revolves around the base of the reflector. It is simply marked with Full, Half, One-Tenth Power, Strobe, SOS Mode and Off.
It didn’t take much for even a simple bear like me to work out how to use the lamp. I took it down past 30m a few times and it didn’t flood, so things looked promising.
You can also charge it from the USB socket of a computer. It is manufacturer-rated to 100m.

Light Source
A single high-powered LED is housed in a deep reflector at the business end of the lamp, which has a curious pepper-pot styling in the fashion of one of Flash Gordon’s spaceships.
The parabolic reflector makes the most of the light output, and pushes it forward in a concentrated beam.
This makes it very penetrative, but not too narrow to be unsuitable for lighting up the inside of a wreck in clear water.
It diffuses nicely, with no discernible hotspot, so you are aware of what is in the periphery of your vision. In this way it is uncannily even. It is said to produce 900 lumens of light.
I let Oli, the Swiss manager at the Filitheyo Island Resort dive centre in the Maldives, use it. We made jokes about it being reminiscent of a Victorian cosh, though it was his diving-instructor girlfriend, Siggy who really knocked me out.

COMPARABLE LAMPS TO CONSIDER:
Aquasun AQ-370, £149
Aquatec Aquamarine, £78
Metalsub XRE 500-R, £189

SPECS
PRICE £149
BATTERY TYPE Not Specified
LIGHT SOURCE Cree LED
OUTPUT 900 lumens
CHARGING TIME 5hr
BURNTIME 4hr
WEIGHT IN AIR 380g
CONTACT www.cressi-sub.net
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