Just received mine, and it’s great — thanks Rey.
One annoying problem, though: it’s got a full-power preflash when turning on in low, at least on the 10440 I’m trying in it first.
If anyone’s unfamiliar with “preflash”, here’s a discussion: http://www.candlepowerforums.com/vb/showthread.php?356740-Preflash-with-foursevens-flashlights
Anyone else noticing this?
Mine does not preflash with Eneloop, does yours?
sounds like 10440 is not compatible…
if thats the battery you want to use, considered a ToolVn or Eagletac D25aaa
you know the Tool is not rated for 10440 voltage and that if you keep using 10440, after a while Eneloop will no longer work right?
I’ll try with different chemistry, thanks for the response! 
I’ve used a Maratac AAA, standard Tool and Prometheus Beta QR Copper with 10440 for years with no problem and no preflash, so I’m not afraid of burning one of these lights out now! 
Just received my light today too. Overall its fantastic. The lowest output is lower than my Promethius Beta QR2, and the highest output is higher. Plus the finish is top-notch and the reverse clicky switch feels great. I seriously love this little light.
Here’s a photo of mine hanging out with its copper cousins:
One note - mine also exhibits the pre-flash the last few comments above are about. This is the first I remember it being mentioned in this thread. Do all the lights do that or only our two (so far)? It only does it on 10440, but I can make mine do it repeatedly by turning it on to the highest setting and letting it run for at least several seconds. Then turn the light off and wait at least several seconds. Now when you turn it back on it’ll very quickly flash back to high before going to low. Turning the light off in medium or low does not cause the same behavior.
EDIT: Its been pointed out to me that this light was never meant to support 10440 and they could quickly damage these lights. I know of at least one that now has a destroyed boost driver because of trying to use 10440, so it’ll no longer function with primaries or eneloops. Mine has shown no permanent ill effects from using 10440 but I don’t think I’ll do it any longer. That solves the pre-flash issue as well.
Whatz the diameter of the driver?
I respect your experience, which I lack.
excellent and thorough detail
makes me wonder if preflash is associated with the new NoPWM circuit
Previous MaraTacs, Tools, BeTas and Worms, that did not have the ring around the LED, were PWM based.
Maybe the old PWM circuit has no preflash on 10440 and only the new NoPWM driver preflashes?
Another factor may be the Nichia, but my money is on the Current Control. Im not sure how N219 responds to power, possibly differently, than previous XP-G2 PWM driven heads on Tacs, Tools, Tas, and Worms (all LuminTop Cu)
above left to right Thrunite TiXmas, Maratac Rev3 prior to Oct2015, Prometheus Beta Cu
note lack of ring around the LED on the two CU lights
two examples of the ring around the LED, ReyLight in the middle, Maratac Oct2015 to its right:
It’s the new driver, not the Nichia emitter. My Promethius Beta QR2 has the same emitter, no issues on 10440. For that matter I’ve got larger lights with the Nichia emitters that run on various sizes of 4v li ion cells. The Nichia emitters are fine with it.
Besides, this light contains a boost driver anyway. The emitter wouldn’t even illuminate at 1.5v.
11mm
that makes sense:
Thanks!
Even better than expected!
Thank you Rey
Thanks Rey, for arranging this.
Got my copper Tool in. I agree with almost every aspect: the clicky, the copper, the l-m-h no memory, the mode spacing, the no PWM, the milder knurling, the 4000K 219B V1. I'm not a great fan of Rey's logo styling but that is minor compared to the rest. I'm a very happy camper, thanks Rey!
I asked for 4 drivers extra and got just 2 (I'll PM Rey about this). They are cute little drivers with a very small torroid:
Waiting for the PM, pls send me your paypal email address so I can check the payment record. and pls also take a photo of the shipping label and the backside of it.
Sorry for the trouble.
Thanks for the quick response, PM sent 
Rey - what's the official battery compatibility on these? I've been running mine on a 10440 - wasn't aware of any restrictions, no info in the OP. I know this is using a different driver? I thinks?
Please post details here. Thanks!!
I started to worry because my package isn’t moving since Dec 30 2015.
I hope it will arrive anytime soon.
update jan 20
the boat is moving now, yay!
Hi,
It was reported that using 10440 might change the driver to a direct drive, it won't go back to normal AAA again.
Is it still possible to get in on one of these lights?
If so, could you pm me the price please? Thank you they are awesome…!
I am really looking forward, never used PayPal to send but geez it’s flawlessly easy.
Thank you for your extremely quick reply, greatly appreciated…!