I’ll give it another shot tomorrow night.
Good Day Unknown00101, 
Thank You Very Much for the Greatly Appreciated information....
Best Regards,
George
I like this light - the small size is nice for such a zoomie. Mine focuses well enough such that I can see the cutouts in the XML2 phosphor. Zooming in and out is a bit slow because you have to twist it so many times, but I guess that’s minor.
My zooming threads came dry and my tailcap threads came lubed.
Thanks for the review Unknown00101. I just ordered one. Now for the wait.
Yes, thanks unknown00101 for the fine review and many detailed pictures.
I ordered the Jax after reading your review and am very happy with it.
Especially after a fellow BLF’er kindly consented to modify it for me.
It has been current-boosted and is now using a de-domed XPG2. I didn’t go for the full boost
(to keep the heat in check) but my little Z1 still achieves 190kCd 
Am loving it !
Looks like this JAX Z1 has made a lot of people happy. It is one of the best aspherical flashlights we can find nowadays especially in this price range. 
replacing those R150 R160 resistors with R100 how much you will get with single cell ? anyone done it ?
With a single cell I’m afraid you won’t see a lot of current gain as these buck drivers normally have fairly high resistance. You need to try using two batteries instead to see the increased current to the emitter after the resistor mod.
that i was afraid of, thank you
The stock driver may not be easy to pimp out for single-cell use, but this host works very nicely with a BLF22DD driver.
Also, does anyone know of a cheap plastic cover which would fit this to protect the optics? It’d be nice to carry this in a pocket without scratching the glass or the AR coating. I’m thinking something like a shallow end cap, perhaps even usable as a diffuser, roughly the shape of a petri dish.
Thanks for the review. I got a lot from it, not the least of which being that this is a worthy zoomie (and one I want)!
Remember there are discount codes at banggood for both the complete,light and the host
Thanks. Which is a better buy in terms of quality and throw? This or the UF-1405?
The Jax is built better but has around half the lux when compared to the 1405 if both are running xpg2s at 5A.
I meant stock.
My 1405 had 68klux stock whereas the Jax has 50klux.
I like the jax better, nicer and better quality imo, but the smaller thwart numbers, and specially the price difference (due to MAP policies, just remember that fight BG-GB…) made me go for the 1504 group buy, approx halving the (discounted) price of the jax. Even the 2 cell 1405 complete light is 5$ cheaper than the (also discounted) jax z1 host
If the lumens double, will that double the throw?
What would anyone estimate the throw on this one? 300m? 500M? 700?
http://www.ebay.com/itm/JAX-Z1-Cree-XHP50-Zoomable-2400lm-8-Modes-Flashlight-/331566155574?
Double lumens definitely doesn’t mean double the throw.
Need to know the lux to work out throw distance