Delta Custom



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Meet the Delta, the latest light from Prometheus

Compact, powerful, awesome.

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  • 6Al/4V (Grade 5) Titanium
  • Dimensions: 1" x 3.75"
  • ~800+ OTF Lumens
  • 92+ Color Rendering
  • 4000K Nichia 219C (x3)
  • Graphite Thermal Pad (#first!) 
  • Solid Copper MCPCB (Direct Thermal Path)
  • Solid Copper Pill
  • Icarus LED Driver (3.4A Max)
  • UCL Glass Lens
  • McClicky Switch
  • Certified 6Al/4V Ti Clip
  • Report Card

The Delta is our newest light and boasts the power of an Alpha in a smaller package.

Delta lights are assembled to order and may take up to two weeks to ship, depending on our current workload. 

I've taken my last 7 years of flashlight design and manufacturing experience and crammed it into the Delta flashlight. One major upgrade is our graphite thermal pad with about 5x thermal conductivity compared to pure copper! The exposed fins on the solid copper pill transfer heat directly to your hand and the environment instead of trapping it inside the light. 

Battery type is IMR 18350 ONLY. Standard lithium ion batteries (non-IMR chemistry) in any size CANNOT handle the 3.4A current drain. Using these batteries are DANGEROUS. Appropriate batteries can be purchased here

I've been working on this driver for over two years. It's simple, powerful, and full of features even the most demanding flashlight enthusiasts will appreciate. A maximum current of 3.4 Amps delivers class-leading power and an advanced software platform lets you make Icarus a reflection of your unique preferences by programming it any way you like...

This driver is 100% designed, programmed, and manufactured (in the USA) just for me. Until now, I've been limited by "what is available," but Icarus is the realization of a long standing goal. No expense is spared, no shortcuts taken, no compromise accepted. I'm proud to put the Prometheus stamp on this driver as the crowning jewel of the Alpha platform.


The "Spun" finish is achieved by utilizing our shop-made magnetic finishing machine. A liquid filled bowl holds thousands of tiny stainless steel pins. A plate of magnets spin below the bowl at high RPM and violently agitates the pins. The raw aluminum parts are placed in the finisher and spun for 30 minutes. The pins break sharp edges and lightly peen the surface. After that, the lights are sent out for Electroless Nickel plating. The result is a smooth surface with a bright finish that preserves most of the raw machined texture. 

Body Styles: 

Currently this finish is available in two body styles:

  1. Prometheus grooving: my trademark (radial grooves around the body) 
  2. Fuller grooving (small axial grooves along the length of the body. 

LED Options: 

We are currently offering the following LED options: 

  1. Nichia 219C (4000K) ~850+ Lumens / 92+ CRI
  2. Nichia 219C (5000K) ~950+ Lumens / 92+ CRI
  3. Nichia 319A (4000K) ~950+ Lumens / 80+ CRI
  4. Nichia 319A (5000K) ~1100+ Lumens / 80+ CRI


The Delta is assembled with your choice of optical beam angle. The narrow optic will give you the most range and smallest hotspot. The wide optic will give broad flood of light over the entire beam, with a slight bias towards brightness in the center. 

  1. Narrow: 26 Degrees beam angle
  2. Medium: 33 Degrees beam angle
  3. Wide: 46 Degrees beam angle

Glow in the dark insert:  

You may choose to include (or omit) a glow insert around the LEDs. This insert is made from the highest quality glow material and is manufactured in-house. It's bright enough to be used as it's own light source for several minutes (in total darkness) after being charged by running the light on 100% power for a few seconds. 

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