MANY YEARS AGO, I was sent a Finn Light to test. It was beautifully made and distributed by Suunto, a Finnish company, but I had no idea that it was made by the outfit that distributed Suunto diving computers in the Czech Republic.
I don’t know if this new lamp comes from the same source but it certainly comes from the same country. It’s one of a range, each model bearing a family resemblance.
Finn Light Short lamps have an integral battery-pack (“short” refers to burntime), while the Finn Light Strong 3000 has a “strong” 3000-lumen output.
These very straightforward products are made from engineered and anodised aluminium and Delrin. Bodies are finished with an exceptionally hard “Eloxal” coating that is claimed to resist physical impact and promises to keep the lamp free of abrasions and scratches.
The Finn Light Long 750 is a canister light with the head permanently connected to the battery-pack and, as the name indicates, a longer burntime.
In common with many other high-quality underwater lamps, they each employ borosilicate glass.
Less subject to thermal stress than other glass, it allows you to turn the lamp on in air without fear of the heat produced cracking it.

Light Source
The single-source high-energy LED outputs 750 lumens. It is set in a very efficient reflector, and the whole is fitted with a substantial Goodman handle made of Delrin.
This allows the user to carry it mounted on the back of the hand, freeing the fingers for other functions as required. My wife thought the size of the handle over-generous for her modest needs, and her wrist ached at times.

Power Source
Low-energy multi-chip LED technology means that the rechargeable 700mA lithium-ion battery can power the lamp for up to six hours. Half of that duration is at full output, after which the intensity slowly decreases.
The rather compact Delrin battery-canister is threaded on to the BC camband, tucking
away neatly and unobtrusively close to the buoyancy-cell. It weighs less than half a kilo once submerged.
With both head and battery-canister permanently connected, some thoughtful rigging was needed to allow Mrs B to stow the set-up in the front-mounted pocket of her Buddy Trident BC, with the cable passing under her left arm.
Without doing this, she got in a terrible tangle when climbing out of her twin-set as it floated at the surface at the end of a dive. Yes, I had installed it on the wrong side first time out!
The intelligent charger affords protection against over-charging, and has a dual-colour (red and green) LED indicator. The cable supplants the connection made by the head once that has been unscrewed and removed.

The head screws down onto the permanently wired-in base to make contact. It is protected from water leaks by double O-rings. This isn’t a very sophisticated way of switching, but as this is obviously a main light, it’s no big imposition to enter the water with it already switched on. I would avoid switching it off while submerged in case I unscrewed it too far and flooded it.
In the event, I found that we needed to switch it on in the shallows anyway because, diving on the Bianca C wreck in Grenada, at a pressure of 40m or more the front part of the head steadfastly refused to be turned either on or off, whether it was me or my wife operating it.

Despite the manufacturer’s specification claiming a beam angle of only 6°, I found that the
well-focused beam of light produced was considerably broader than the 12° angle claimed by another manufacturer for its own light.
This said, very little light was wasted in producing a peripheral halo, and when my wife was using it and not actually pointing it at me or lighting any obvious subject, it looked as if it was switched off.
This says something for the efficiency of the design of the lamp’s reflector. Its 750 lumens certainly seem to be bright enough.

Sitting on the plane ready to leave Grenada, I was summoned by an airport official and escorted back to the terminal building, to where checked-in baggage was screened.
The man with the X-ray machine was not happy with the contents of my bag, and wanted to see inside it. Of course, it was the Finn Light that had drawn his attention.
He wanted me to disconnect the battery-canister from the permanently wired lamphead, but I managed to persuade him that it was a lamp by screwing in the LED front and shining it in his eyes.
Naturally, I wasn’t going to travel with such a lamp assembled, in case it switched on accidentally during the flight and caused a fire.
All the other passengers seemed very glad that I had cleared that up, when I reboarded the aircraft and the delayed flight could depart.

Metalsub KL1242, £499
Halcyon EOS LED, £795
Hollis LED 16, £875

PRICE £645
INCLUDED Goodman handle
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