I am a musician - sax/flute player. Tonight I did a gig poolside near the ocean. It was freezing by Florida standards - the wind was howling at 30mpg, the temperature dipped to 50 degrees, it was near blizzard conditions (Fla standards) and it was so cold my fingers could not move fast enough to play the upcoming sax solo. Then I remembered reading about temperature warnings about my new Arc 4+ light and with a stroke of genius I turned on the light full power and placed in my pocket. A few minutes later I put my hand in my pocket and the warmth of the light thawed my fingers not to mention it put a bonfire in my shorts. I was able to finish the gig in relative warmth & comfort with the help of my new Arc 4.....