My understanding of it all was that LEDcorp developed their ground-down-LED PR lamps for use in Mag lites, then found that they worked in the Dorcy Boss lights too, and so the Turtlelite 1 was born. Dorcy were impressed so LEDcorp licensed out their LED bulb design, in order to sell "turtlelights" to supermarkets in vast quantities that LEDcorp were not capable of doing. Dorcy also sell an adjustable-beam aluminum version which is identical to the LEDcorp one, for a similar reason.
Maybe I`ve just gotten a bit confused, but that was my take on it. Looks like Dorcy are moving away from the single-LED-narrow focus model though, and about time too. I bought an original Turtlelight when they were still cool, and never really cared for it. Nice body, shame about the beam /ubbthreads/images/graemlins/tongue.gif . To me, a single LED is not bright enough to make a narrow beam practical. Too tight for close work, too dim to light stuff further away, and although tough and long running, too big physically. The Turtle 2 looked like a slightly better model but I always thought it was too expensive and still a bit big for its output. Definately not EDC territory!
Nowadays the flashlight world has moved on. Luxeon LEDs are bright enough to be focussed into a narrow beam and still be nice and practical, and the ever decreasing cost of 5mms has made larger clusters more affordable. I`d be quite keen to see a Luxeon version of the Turtlelite, maybe with a bit of electronic regulation gizmology inside too. The size compared to the increased output wouldn`t seem so bad then. I wonder if it`ll ever happen? Of course I could always just stick an EverLED into a Dorcy Boss and do it myself but that`s cheating!
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