Jon B.wrote a review of Petzl Tikka RXP Headlamp on June 2, 2015
Familiarity: I've put it through the wringer
Just used this on a night run through the Grand Canyon. Started at 10:00 pm and ran all the way to sunrise without draining the battery. I love the adaptive lighting and found it very accurate. I also liked being able to turn off bright LED and just used the red light for close up needs. Was very comfortable to wear for over 7 hours of running.