KC1 keychain light is available now

Looks great. Multi-colored bezel aux LEDs without having to change the aux board! Plus Anduril and knurling! Ordered two.

I notice the switch appears to be exactly the same as on the v1. It is not recessed. Guess I’ll mod the switch soon as it arrives.

Ohhhh…maybe I misunderstood…ALL of those colors will be on the board and are selectable? As well as a “rainbow” and “voltage” mode using the multi colors?

thanks!

RGB is making its way from PCs to flashlights. Will we ever escape?!

… I need one, haha.

Well… I ordered two! Dark grey with SST20 5000K and dark grey with SST20 4000K and two stainless steel bezels. My D4S and D18 have the 4000K and I really like the throw/tint.

One question… How does the voltage aux light readout work? What do I see when I configure the aux LEDs to the voltage setting? Cheers.

All SST-20s are throwier/higher candela per lumen than the X-PL HI.

The 5000K is not high-CRI but basically matches the output (and efficiency IIRC) of XPL HI.

4000/3000K SST-20 is about 25% lower output but are high-CRI. So a bit more heat, lower max output at turn on and less efficient when matched for output against the others but high-CRI with EXCELLENT red rendering.

X-PL HI almost always has a good tint, either below the BBL (rosy) or right on it (little to no ugly green). SST-20 is greener at low power levels, pretty good at ~500ish and rosy at turbo or close to it. Personally I’ve been happy with the 4000K SST-20s as they’ve been no more or less green than almost all the other high-CRI emitters I’ve tried (219B and E21A being the exceptions).

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So just to confirm, the V2 will have the version of Anduril with additional 60 lumen lockout mode and option to set mode memory to a specific output?

This looks great! I love the multi-colored AUX lights.

My one disappointment is the original driver. This would be a perfect EDC light with a few more 7135 chips. I would really like to see a FET+3 like the D4S or, ideally something more like a FET+8 or FET+7+1.

I hope Hank will implement something like that before too long. {fingers crossed}

—Bob Q

Are the ss bezel, magnetic tail caps, and battery tubes going to be available for sale separately? For those of us who want to swap out some parts with v2 parts.

Got my 2 ordered early this morning. I never get anything in CW so I got a grey one in the sst20 6500k with the magnetic tail. I’ve been really happy with the output and the throw of the sst20s vs the crees. I’m a really big fan of the 3000K, so I got one of those too but w/o magnetic tail. I hope to carry the 3000k more and don’t want to worry about the magnet erasing credit card magnetic strips in the ones that have it.

Love this version of the light, Hank. The multi-colour aux LEDs are probably going to drive me slightly nuts - and maybe require a matching set of D4v2s, one for each hand…

A question on the battery type though: Is a Samsung 30Q enough for this light, or would one of the Sony VTC6 be better? I have a VTC6 in my current D4 and it seems to work extremely well. It would be easy to get the battery shipped in the light, saving the normally userous shipping for LiIon batteries into Canada. But if a different battery would power the light for longer, I can deal with it.

I don’t think Hank can ship batteries to canada even in a light

Same cells, with same chemistry and ratings. The Sony is slightly longer.

But you can get better capacity cells for slightly longer run-time. 3600mAh instead of 3000mAh but you also have to look at the Continuous Discharge Rating (higher amps mean higher output but less run-time if you use turbo or unregulated output)

hoping the aux LEDs on this are adjustable in brightness like those on the FF lights. Also waiting to see about thread compatibility with the D4 v1.

exciting flashlight times!

Damn…. I must have one……
I will wait for the recently ordered D4 with 3000K and decide if I get a D4 V2 with 3k or a 4k then….

so is the Aux board with a second MCU that controls the colors?
and the main MCU uses serial data to set the Aux MCU?

or Attiny 1634 MCU with more pins to control 3 aux LED channels?

you can simply put 3 0402s together smaller than such a 0606 LED size

and if you want go crazy use 0201 LEDs

Is there somewhere a comparison between the FET and the 7135 efficiency? (for different power levels)
Or can someone just write some general numbers?

OK Got my sand ordered….

Bring on the D4SV2. :money_mouth_face:

Can someone explain how aux leds are implemented? Do they turn on when the light is off? Like a lit tailcap? Or is it a mode during use?

I’d want them pretty dim if the former.

Will the added lanyard hole be less sharp-edged than the one on the D4S?
This is the only thing I don’t like on that light….

They are not a regular use mode. Anduril lets you set two different modes for the AUX LEDs: one for power off and one for lockout. Each can be set to off, low, high, or blinking.

It is also fairly easy to change the modes, so you can reconfigure them as needed.