Basic specs:

Output:
High: 100 lumens
Low: 1 lumen

Runtime:
High Setting: 1.5 hours
Low Setting: 50 hours

Weight: 3.3 ounces with batt.
Batteries: One 123A lithium

Price: $139.00

I do not suppose you will find many TLB members who would pay quite so much for a 3.3 oz headlamp, regardless of how wonderful it might be.