Be cautious of the rechargeable lamps. They don't last much more than 1/2 hr and take a lot longer than that to recharge.
Good grief...
Yeah. I chuckled when I read it.
In their instruction manual they claim 1hr on the brightest setting for the NU32.
Fair enough, but no headlamp is going to last long on high, and there are very few occasions where high is really necessary. Everything is a tradeoff for sure... for summer backpacking I just carry the Nitecore. For hunting I carry the Nitecore in addition to the Revolt... ie, I always have two light sources.