KC1 keychain light is available now

I came out of lurking mode to ask if anyone knows how limited this is? I already have four D4V2s from Hank: Black XPL 6500K, Grey XPL 5000K. Cyan e21A 4500K, and a Sand e21A in 3500K. I’m not normally a fan of rosy tints and definitely don’t want to get anything too redundant but my FOMO alarm is going crazy. I don’t even know what light I’d want this in but am leaning towards the 219b in 4500K in something.

Please note that Hank indicated he is shipping it with 9 Amp driver. No FET is included by default:

Although the result of 2.25 Amps per emitter exceeds Nichia’s specified maximum current for the 219B, The collective experience of this forum has demonstrated that lights with good thermal performance give the 219B no discernible trouble at this current.

Having a FET could be slightly risky, and I would prefer not to do so for 4 x 219B, but if you read the last page or two of discussion, you will see others are fairly comfortable with it.

K9.3 using 219B SW45K…with or without FET? What’s your opinion? 9x 2.25A max = 20.25A. Using a Samsung 50E or 50G should be fine, shouldn’t it?

Should be fine, BTW I made this a while ago to estimate direct drive current : Graphing Calculator - GeoGebra

Instructions : LED direct drive current calculator

thank you so much, I appreciate this. I felt like the answer was somewhere in the last page or two but I got a little lost. This is a big help, and I read that what Hank said earlier and completely forgot about it, thanks.

Here is the thing about these LED’s. If I just ask you if you want a pink/rosy light, chances are you wouldn’t have any particular reason to say yes. But this is one of those things where you don’t know you want/need something simply because you don’t know it exists or how it benefits you.

The thing about this tint is that it’s like a final edit on pictures or a movie. When you see a magazine photo, it looks perfect. You don’t know how it got to look like that, you just know it looks great. Well this is the case with the Nichia 219B in SW45K.

If you were to bounce the rosy 219B light off a white wall and compare it to some of your other favorites, you still may not see “the big deal”. White walls ins’t where colors are gonna shine obviously. It’s in the colorful area’s of your life where you’ll best enjoy this light. Don’t compare it to the lights on a white wall, compare it in a garden, or on a beautiful painting. That’s when you’ll see how amazing the “rosy” tint is. Reds are a super important spectrum of color. Even just something simple like human skin becomes vibrant with 219b, then instantly dull with other LED’s. It’s something you just end up adoring after experiencing it fully like I told you, in real life. It’s in real-life conditions that other LED’s suffer or fare way worse. Others just don’t cut it when you compare them this way. In a nutshell, Nichia 219B light is like the perfect color edit to real life. Thats not something you can just claim about any LED. And keep in mind, it’s not just any ol’ rosy tint either. It’s ultra high, right side of the BBL High CRI rosy tint. Nichia 219B’s are like if LED’s were introduced to a brand new color and all of a sudden everyone wondered how the hell we ever got by without it.

So yeah, maybe give the LED a shot. Nothing you have now compares to it, so your FOMO would ultimately be appropriate. There are few that saw they don’t like the “rosy”. OK, I don’t know how much of a chance they gave it so I can say for sure why that is. All I know is if you like your movies and images to have proper editing and LITERALLY proper lighting (that makes colors pop), you may end up liking that effect on all life around you too, just saying.

Best of luck and Happy Flashlight hunting

I’m thinking about my first hank light now with these sw45k (well I guess I briefly has a D4S that I gifted)…

Anyway, I feel guilty, but my top choice is a D18 all sw45k contemplating a 1/3 mix of sw35 since I know the near 5000K of the sw45k is a bit cool for my taste, and my favorite tint ever has been 3500+4500 e21a.

The D18 has always been on my wishlist but low current per emitter has kept me away from sst20 variants.

K9.3 with sw45 main and 2000k e21a secondary is an intriguing idea as well.

A simple KR4 would round out my list of thoughts. Though ideally in the ArtieT Special® with a Ti/black Al combo.

What do y’all think

WOW, that is by a mile the best setup I have heard suggested for the K9.3. That would be absolute finesse.

im digging that k9.3 setup too, although I don't know about the e21a, I think the 2000k would be a really nice contrast!

if you do go with a kr4, let me know I'll ship you one of those Ti tubes for the cost of shipping. I have 2 extra and only use one of them on the black one kr4.


im still debating my selection of light to accompany this mystical led. I think I'm back at d4, sand, warm white switch. But the dt8 keeps calling me.... and the gray kr4 does too.. man.. this is tough.

dude, you just convinced me i need this led. At the same time you scared me, as I have faced this turning point on my collecting before- where I get that new LED that has me selling half my collection because I realize I need all my Favorite lights to have this led in it. Although I feel like this emitter is a little to rare to do this with. So that's good lol.

Well I can tell you that at least this LED will be totally worth it. I have not regretted going team rosy for a second.

I’ve never had nichia led’s before - might stick some of these in a D4SV2, anybody done that yet?

Yeah. Hank probably can’t do e21a secondaries.

PM incoming Artie.

Thank you, I hadn’t considered it from such a point of view so you may have sold me! What do you think from Hank will get the best out of this emitter? Another D4V2? I don’t really need anything so it will just be a showpiece and occasional edc. Maybe I will take the leap with the 4500K if it’s the one to get and would be like owning a piece of flashlight history lol.

Hello, all! Y’all sold me on the 4500k too. I just purchased my first Hank light! A D4V2 in all copper, with an amber backlight, and quad 219b 4500k’s. I’m so freakin’ excited, it’s going to be really hard to wait for it to come in the mail.

Been lurking for awhile now and have been putting off ordering my first Hank light for awhile now. I’ve been very indecisive because I’ve been foolishly trying to figure out what would be “the perfect Hank light if I only ever buy one”, which is silly, because I know myself better than that. There will be more to come.

My name is Ryan and I’m from Texas. I don’t know if an introduction is customary here like it is over in LPF. My hyperfocus recently shifted from lasers to flashlights, so after hanging out with the good folks on LPF for awhile and purchasing a couple of incredible lasers from Sanwu and another one on BS&T from a really cool and capable laser maker in Vietnam, I started obsessing about flashlights. Lasers are a new love for me, flashlights are not. But even though I’ve loved my flashlights since I was a kid and always had a little incandescent mini-mag on me, I never bought any lights that were just really cool until now. As far as EDC as an adult, I started with a Streamlight Microstream, which, to be honest, still gets some time in the pocket because it’s tiny, weighs nothing, and I don’t mind if it gets lost or broken. That thing combined with a Benchmade Bugout is pretty much unnoticeable in the pocket, and doesn’t even weigh down loose pockets of thin shorts. Then awhile back I got a copper Olight i5T EOS because I wanted a AA light for work, because I am a wildland firefighter, among other things, and there is ALWAYS AA batteries around in that line of work. I lost that light and recently bought an aluminum one for work and a brass one because it looked shiny, and I also purchased a copper mini warrior from Olight, which I really like, except I don’t care at all for the tint and coolness of the emitter. But that’s Olight for you. I also recently purchased an Acebeam H17 with 3x 219C’s in 5000k for around the house, and that’s a pretty fun little headlamp. In addition, I recently convinced our district to get us Acebeam H30’s and T36’s. I wanted to get us zebralights, but when factoring in the entire context, the Acebeams just made more sense.

But now, now I have purchased a Hank light. My first. And as luck would have it, with the legendary Nichia 219B’s.

We’ll see how long it is before I can’t wait any longer and order a DT8 as well, lol. I really want some 219B’s in 3500k.

Nice light! Welcome to BLF!! We are very informal here, but an intro is fine, we'll take it!

You certainly started out with a winner, D4V2 in full copper w/219b's is certainly a flagship of Hank's. Don't worry if it gets hot quick - it's gonna happen. The copper is so conductive of heat, the heat goes almost instantly to your hand on turbo, but that's a good thing for the LED's because the heat is pulled away from them quickly. so if you wear gloves and let it rip, only thing to worry about is the battery, but still over heat protection will kick in, and the battery can handle up to 80C or so, so should be good.

Welcome PineyTinecones,

Allow me to second Tom E in that your purchase of a D4v2 in copper with 219B’s is incredible. That’s a light I’ve only dreamt about. I can’t believe Hank finally pulled it off. Sadly, even though I wish I could have exactly that light, I HAD to go with the D18 in all 219B’s, that’s just too hard to pass up.

Plus, the most beautiful copper light to me is still the Fireflies E07 and that one already came in 219B’s. So in my case, If I got the D4v2, it would still be in second place to me and I would still be EDCing my Copper E07 anyway.

It’s the D18 in 219B’s that’s the monster in the room for Hank lights. That will absolutely fill 18 Nichia 219B- sized holes in my heart. No light I have in 219B exceeds 7000lumen (which is still out of this world). But now in a shocking turn of events, my new D18 will produce 10,000 FREAKIN Lumen of 219B immaculatness. I simply do not have the willpower to pass that up, I am just a man after all.

I have no clue how long Hank will have these LED’s. But if he still has them on my next purchase. I may not have the power to resist exactly the light you bought. Rest assured you made THEE perfect choice. Actually, you seriously got to BLF at the absolute most perfect time you lucky bastard. :slight_smile: These LED’s in Hanks hands in this quantity is unprecedented. I hope you enjoy.

Please enjoy your time here, PineyTinecones!

I went with the DT8 in cyan, with 219b 4500k.

The DT8 is ideal for carrying God-tint emitters in a non-mule config. The added max output is extremely nice for lower-output emitters like E21a and 219b.

Welcome to BLF PineyTinecones! You’ve ordered an awesome flashlight. The Nichia 219B sw45k LEDs are one of my favorites.