I purchased this light when it first came out a few years ago and have used it it all conditions from 100+ degree temps in the desert to sub-zero winters in the mountains. Works flawlessly every time. When switched on, it itakes about a minute to come up to full output. Don\'t worry, there\'s PLENTY of light even on startup. Love the beam configuration: a intense long range core for lighting up that distant object, with a very well balanced flood area for seeing closer surroundings without blinding. Excellent quality. I do wish it had a battery gauge. No way of telling how long you have left, as it will maintain full brightness until battery is exhausted, then \"blink\", and you\'re in the dark. Otherwise than that, no complaints whatsoever.

Fantastic!