The boost driver upgrade is available for the quad version of XP-L HI, SST-20, Osram W1/W2, Nichia 219B R9080 versions, each LED receives 2A 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. Emisar D4V2 puts a high lumen output but generates a lot of heat at the same time, please acknowledge before purchasing. Unprotected, flat top battery works only (not included in the price), D4V2 does not work with protected battery. D4V2 Ti reflashing kit purchase link Features: • CNC machined from Titanium and Copper. • Efficient UK made Carclo Quad LED optics • Unihead construction • High lumen output and low moon output • Ramping interface • Electronic soft touch 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 • Dimensions: 96mm(length) * 28mm(head) * 24mm(body), 65mm(lenght 18350) OTF lumen output at start-up: Nichia 219C : 3000lm XP-L HI : 4300lm SST-20 6500K: 4200lm SST-20 5000K: 4200lm SST-20 4000K/3000K 95CRI: 3000lm This product uses free software distributed under the terms of the GPLv3. Source code is available from http://tiny.cc/TKAnduril The Mule version is with 8*LEDs, no optic, no aux LEDs, no hotspot, completely flood. For the general users, we recommend to choose regular version (with aux LED, optic etc) instead of the mule version. (send us an email to contact@intl-outdoor.com if you need the mule version) 
Customer Reviews
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Big Dog
Best D4v2 yet December 31, 2020
I have the Raw Ore 1, e21A in 2700. This is the most beautiful light that I have owned so far. I love the anodizing, and with the warm tint and copper head, it is just a work of art. For anyone wanting a true enthusiats light, you cant go wrong with the D4V2 or D4sV2, or KR4. Anduril is the V-12 of UI's: everybody should own at least one in their lifetime :) I just love these lights and can't wait to get a K9.3!
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