I recently had a poor experience with Petzl after my 2 year old Tikka died this summer. I contacted customer service to explain what was wrong and that I would like to submit the defective headlamp for coverage under the 3 year Petzl warranty. At that point I was informed that the 3 year warranty is based on manufacture date, not the date of purchase. So while I have had the light for only 2 years, it was actually made a little more than 3 years ago which meant Petzl would no longer cover it under their warranty. Pretty sleazy, I think.