Not baggin on anyone here but as I've read through the threads like 4 or 5 out of 7 guys have had problems with their Alpen products. It's cool that they have a lifetime warranty but the failure rate of over 50% seems a little high.
I've never looked at their products nor do I know what they cost but after reading through this topic it makes me think that a guy may be better off saving his change for a few months and getting something with a better track record. Not sure its worth risking a hunt on... w/ my luck they'd fail me day 1 of my 5 day hunt.

the only problem I have had with mine is they were left in the field for a few months and I tend to misplace them..I love them when I can find them!