There was an few old threads about this light. I believe it hit Europe under another name.
I cannot stop my self from commenting, since I used it several hours along side my xp-g2, in an experiment of painting (with 4000 lux headlamp, and 55,000 lumens of fixed lighting). My conclusion: this light rocks as a wrist light for patching, and helps some for painting. I couldn't stop myself from Ordering a fenixtactical TK35 as a result. The winner for assisting the headlamp was the xp-g2 at 120 lumens level as a wrist light. For painting, about 400 lumens of cooler wristlighting for 8 hours runtime would be ideal in assisting headlamp for more lux, area, and angle. (Fixed light alone cannot achieve enough lux and nuiance. Also, shadowing is an issue with fixed lighting.) And, the closest thing to a 400 lumen for 8 hours is the fenix TK35, with the two 18650 power source and the non linear constant current driver.
The 2 AA version has regulation, with little output drop (nearly 9000 lux, if I remember) over 4 hours (smart charger and high end xx or sanyo 2700 NiMH), per my lux meter runtime tests. I think this efficiency of this regulator is pretty acceptable too--surprisingly. I can accept a flatish output, 4 hour runtime on only 2 AA's. But when you are concentrating on climbing, cutting, the wider beam of the xpg2 allows me to just point in the general direction. It just takes 4x the juice even with an emitter much more efficient.
I suppose this is the only regulated flashlight light sold now by brick and mortar stores. I got no replies when asking about this lights nearest competitor: if the 2013 Walmert colemans were using a more advanced xpc2 and xpe2 emmitters, as they have jumped up in throw and lumen output in last month at my super walmart (not regular walmart). Still the regulator of this light would recommend it over an even more advanced gen 2 (xpe2 or xpc2) emitter. While I might take a direct drive over an inefficient driver, a good driver makes a big difference.
