This is the Petzl TacTikka + RGB Preview.
LINK : http://www.amazon.com/Petzl-TacTikka-RGB-Headlamp-Desert/dp/B00GCHNLR4/ref=sr_1_1?ie=UTF8&qid=1400707820&sr=8-1&keywords=Petzl+Tactikka+%2BRGB
There are three variants of this headlamp, one in coyote brown which you see here, one is black and a camo pattern.
The prices vary slightly on amazon for the different colors but so you're looking to pay between $41 - $48 depending on the color that you choose.
3oz even when loaded with the required 3 aaa batteries.