Just received my light. Has the 3 cell battery pack not 6 as stated above. Item is being discontinued as per customer service. No other battery packs available. other than these problems seems like a nice headlamp. Will look somewhere else for what I require.
Only used the H3 for household activities so far (attic repairs, car work, etc) but I've been quite happy. Compared to my old Black Diamond this is much brighter, even on "low." I like the flexibility to run the side LEDs independent of the main lamp. Running on AA rather than AAA batteries was one of the primary reasons I picked this up.
The only negative is that the band is somewhat tight even adjusted all the way. I do have a larger than average head and I was able to wear it for over an hour with no pain, but it could be more comfortable.