Impressive

Wow. This thing is bright. I actually bought this for testing ocular reflexes, but I'm a little bit afraid to use it on my patients (the package actually warns: "AVOID DIRECT EYE EXPOSURE").

This is a great tool

This pen light is great I love it. Check pockets cracks and crevasses without risking your fingers very bright The only problem I had with it was the button but it still works fine its just a little stiff hey I ran over the thing!

I bought one for my dermatologist

I have several of these in varying colors, the red is for night flying, because it does not ruin one's night vision. Need I say more? The battery life is excellent, and the batteries are cheap (AAAA) if you plan ahead for your needs and find an internet wholesale source. The LED light is pure white and lasts 100,000 hrs, as compared tp the "orange" color of the light my dermatologist had been using (incandescent bulb disposable penlight).3 AAAA batteries last about 60 hours (included).