This is single channel version, for the dual channel version, please click here
The Lume X1 boost driver upgrade is available for the quad version SST-20, SFT-25, Nichia 519A R9080, Nichia 219B R9080 versions, each LED receives 3A current. The driver is not compatible with Nichia E21A, Nichia E17A, and mule versions of the flashlight.
Please be noted that the boost driver version will have less output on turbo than the regular version, it is a more efficient driver(90-95%) with longer running time and less heat.
The Lume X1 is a high power driver - for best performance, recommended to use low ESR, high CDR 18650 unprotected cells: - Molicel P30B, P28B, P28A, P26A (grey) - LG HJ2 (lilac), HG2 (brown) - Samsung 20S (blue), 30Q (pink) - BAK N18650CNP (pink) - Murata/Sony VTC5A (green) Please note that this flashlight is not a toy and must be operated responsibly.
Noctigon KR4 puts a high lumen output but generates a lot of heat at the same time, please acknowledge before purchasing.
Features:
• Pocket clip and lanyard ring are both included by default
• Discrete knurling
• Grippy anodized surface
• CNC machined from aircraft-grade aluminium
• High end custom made N244M optic.
• Anti-reflective coated glass lens
• Unihead construction
• High lumen output and low moon output
• Ramping interface
• Electronic tail switch
• Beryllium-Copper springs with 45% IACS superior to stainless steel alloys used for springs with only 2% IACS.
• Temperature step-down
• Waterproof and dustproof to IP67 standard (up to 1 meter)
• Default 18650 body with optional 18350 battery tube
• Weight: 95g (without battery)
• Dimensions: 98mm(length) * 29mm(head) * 24mm(body), 68mm (length 18350)
OTF lumen output at start-up:
E21A : 1200lm
519A : 3800lm
SST-20 6500K: 4200lm
SST-20 5000K: 4200lm
SST-20 4000K/3000K 95CRI: 3000lm
SFT-25: 4800lm
This product uses free software of Anduril 2, distributed under the terms of the GPLv3.
Source code is available from https://toykeeper.net/anduril
Customer Reviews
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Red
Bought the same light twice April 12, 2025
Lost my dark gray linear 219b 4500 and bought the same one to replace it. I never want to leave it at home or use my other flashlights now because of this KR4.
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Albert
Noctigon kr4 September 16, 2022
Awesome flashlight super quality super bright amazing work love it thank you !!!
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Jeremy
AWESOME!!! February 26, 2022
This is my first "Hank light" and it's FREAKING AWESOME! It's opened up a whole new world for me!
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David
It's Good, but a bit plain February 3, 2022
I have this in the same emitter as a other lights, the SST-20 4000K 95CRI and it works great. The driver is better in this light than the D4V2 driver. It runs longer and is more steady in output. More efficient.
My only complaint with this light is it's a bit plain. It seems like it was designed to fill a tailswitch space in the lineup. It's not really special to me like Hank's other designs. It's sleek, but I like the busy, knurled look of the rest of the lineup. I'm not in love with the button's action either. It seems loose, but it has held up, sp it's just the feel of the button, not the durability.
Those opinions of mine about the design aside, this is a great light functionally. I find it less useful in the 18350 mode than the D4V2 because it gets weird actuating the tail button with the little tube and there is no magnetic tail which I think really works good on the D4V2.
Side note, this may be the perfect off-hand light when using another tool in your primary hand. You can hold it up high with your thumb on the button. This is my primary use for this light with the 18650 tube.
Even a B+ Hank effort is an A++ compared to other brands. This only pales in comparison to the venerable D4V2. -
Vision
My best EDC I love it December 14, 2021
Very nice EDC I love it
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Mark
Favorite Floody! April 19, 2021
Just bought my 4th in a different configuration. Perfect flood for everyday carry. 18350 option makes storage even more convenient, while barely sacrificing power and endurance. I work in a rough environment. Things fall out of pockets and off of ladders all of the time. These lights could probably take a bullet and still work. Kudos! Amazing products!
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Eric
Game Changer January 18, 2021
This light is overbuilt not overpriced. Gives so many options to different uses cases (high cri to spaceship landing light, its possible). Beautiful addition to any edc collection built for daily use.
Its a pocket lightsaber and you wont regret it(as long as you dont shine it in your eyes!) I Big time recommend this light to anyone ready to carry a high powered beautiful light. -
River View
Beautiful light, Tons of lumens September 28, 2020
Love this light.....KR4- XP-L HI V3 3A
Finish & fitment
Firmware
Aux leds & tritium
Plus 2000+ lumens on high, 4000+ on turbo
Damn near perfect.
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Product Questions
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