This light provides a near flawless experience. The UI is wonderful, with quick channel switching and intuitive features. The body is machined very well, with smooth threads and gnurling. Coating is great. The hidden USB charging port is a nice touch. Ergonomically perfect, it carries comfortably and is easy to grip.
The K9.3 is a fantastic quality light that can be customized to fit most any role. I am a potential outlier in the world of torch-fanatics because I chose to create a light where the primary 9 LEDs are 660nm red and the auxiliary 3 LEDs are 5000K white. I did this because the majority of my light usage is in the early-morning and late night checking animal traps around my farm. I'm glad I chose to use the 9 primary LEDs for the red because, while the 3 LEDs in red might be serviceable, with 9 the flashlight can throw a large, full area of red light well over 100 feet (of course, this won't be clear vivid light like a normal white flashlight but I created a specific tool with a specific task). At such a long wavelength, the difference between 3 and 9 red LEDs is immense.
The dual-channel design in the orientation I chose lets me keep a highly-serviceable white light "in the back pocket," metaphorically speaking. I don't use the white option very much, but the 3 auxiliary LEDs are more than enough to coat the forest in white light for hundreds of feet precisely when I need it. A flashlight-enthusiast would likely prefer the more normal approach of making the 9 primaries white and the 3 auxiliaries red - only more reason why I appreciate the ability to completely customize these flashlights for however you intend to use it.
The programming of the light is impressive considering the only interface is a single button. I recommend printing the flowchart available on this site for easy reference while learning the deeper functionality of the light. After a few days it's quite easy to visualize the functions in my brain to the point where I don't need to reference any material to navigate the program. Not to mention, it's also totally entertaining to manipulate the functions when you become skilled with them :>
I commend Hank and everyone else involved in this operation for enabling me to pursue all my strange flashlight-desires, coming out with a lifetime tool, without searching high-and-low for some perfect prebuilt mass-manufactured design, and without breaking the bank.
SST-20 Deep Red, 660nm is so impressive! i didnt think itd be so bright.
Cool White - XP-L HI V3 1A, 6500K Also above my expectations.
i love this UI, this size, this light is great!
My fourth light from Hank in about a month!! Great build quality, easy channel switching, and easy to use UI.
Not much of a review, but I love mine, and you will love yours.