Weight-wise, it's just a single 18650.
I have a JetBeam HC20, which weighs 83 grams, and it's not too heavy for me.
Light-wise, you can't have too many lemons! 
This one will be 170 grams with battery.
…unless you have a big head and want to sail a boat with it.
I’m very interested, would love a headlamp with xhp 70.2, even if I never used the turbo mode. But one thing I appreciate about Thrunite flashlights is the removable bezel, for easy emitter swaps. This one looks like a press fit, curious if it can be opened up.
I wouldn't use turbo very often.
I wonder if the runtime for high is accurate...
1275 lumen for 90 minutes sounds really nice.
That does seem heavy compared to a skilhunt H03 which quotes 44g without battery, but I remember there being some inconsistency with how thrunite quotes headlamp weights. I think the quoted 123g might be including the head strap assembly.
You still believe in fairy tales. for this host 600-700lm is maximum for long use.
Imalent HR70 with XHP70.2 in 1000lm mode. (18650 imr 3Ah)
Max temperature 83C.
A lot of similarity in the host to the wowtac A2s
I am happy (riding a bicycle) with the NU30 that weighs twice as less.
+1
Nice. I need (want) one of these.
Hows it gonna handle the heat? Looks to be a nearly identical head as the olight h2r and that thing gets hot quick with less lumens.
I really want to see some test on this one. I’ve been using the Acebeam H15 for my indoor inspection work and it’s bright and great for photography given it’s very wide floody beam. However, it does get very hot and the battery doesn’t last very long at all. The annoying low voltage blinks occur too soon for extended use.
Skillhunt H03 and Boruit EHL0628 are both 125 grams with batteries
discount code is : 20%
With or without headstrap?
Some companies quote weight with headstrap (nitecore HC50, thrunite TH20) and others without headstrap (H03). And the strap can weigh between 20 and 50g depending on style. So we really can’t discuss the quoted weights without clarifying.
IMO it’s just the flashlight weight that’s important because the strap weight is distributed around your head and won’t contribute to the light flopping around.
At some point you need to draw the line. It’s more of a pissing contest now, who’s got the bigger numbers. I understand lumens sell that’s why they sell and make lights like this.
How long could you possibly use all 3350 lumens maybe 10-20 seconds if even that before dramatic stepdown? Is it really worth it? It’s more of a bragging right at this point?
Personally as a headlamp user it doesn’t sell me a headlamp.
I don’t even bother to use the turbo setting in my HC33. If it’s a cold day you can run the HC33 at turbo and it just manages to do 30 seconds before going below 1800 lumens. On a hot day good luck. This light looks like same body but with almost twice the power.
Not a stab at Thrunite. Yes I would build a light like this but I would not place it on my head or sell it to an everyday consumer.
I respectfully disagree, for three reasons. First, the 70.2 is produces more lumens per watt than most other emitters, so you’ll get more efficiency at every level, except perhaps firefly/moonlight. Second, the floody beam of the 70.2 in a small reflector is perfect for a headlamp. Third, I frequently use the turbo mode in my ArmyTek Wizard xhp50, for example, when doing snow removal in the dark. We only get about eight or nine hours of daylight during our long winters here in Minnesota. Not sure if Thrunite’s thermal stepdown is time or temperature-based, however.
What ever gains that maybe made by the more efficient emitter will be negated by the boost driver effency making it perform worse then a 3v LED. What numbers are we looking at 80% effency for the boost driver? Considering how small the light is the driver will get extremely hot and become less efficient. Plus voltage sag from the single 18650.
If they where to run multiple 3v LEDs in parallel it would be more efficient.
I’m pre-ordering one with the 20% off discount code.
Edit: Ordered
Same here, ordered neutral white, great price for what you get, and I’ve been very happy with my previous Thrunite purchases.