Zebralight H600Fc Mk IV

“I actively use an H600Fc (secondary headlamp), and I can say it *does not* sustain anywhere close to 1000 lumens unless you're outdoor at somewhere below 0F. In non-winter situations, it sustains a bit higher than **Armytek Wizard Nichia** (my primary headlamp). The difference in sustained output is marginal at best, since lumen perception is non-linear, and for me does not make up for its inferior tint & CRI at all. Still, if you don't care much about tint & CRI, I'd claim H600 the best general-use headlamp. If you really, *really* want a headlamp that sustains 1000 lumens and has reasonable weight, stick to **Anduril 2** headlamps, like Emisar DW4 (18350). You *can* set it to sustain 1000 lumens, even with high-CRI, low efficiency emitters like 519a, by lifting the step-down temp to 80C / 176F. Doing so you will **significantly reduce the lifespan of your cells**, have to **wear gloves just to touch it** once it's on, and somewhat **increase the risk of it blowing up on your forehead** mid-use.”