Full disclosure: I bought this light with my own money because I thought it would be good and I was right. I wrote this because I want to share my experience.
Correction: The emitter in this X1S is the FFL5009R, not the FFL5009D as stated in the title. Reddit doesn't allow title edits. Thanks to u/macomako for catching the mistake.
About a month ago I bought a Fireflies Lights Z1 Artemis with the FFL5009R 3500K Rosy emitter, and overall I've been incredibly impressed with it.
I've been a Nichia/high-CRI guy for a long time, and the emitter in the Z1 is painfully gorgeous. More importantly, despite being a full enthusiast Andúril light, Firefly absolutely nails the two things that matter underneath all the flashlight-nerd stuff:
This is a solid object.
This is a great flashlight.
So naturally, I immediately bought another one.
This time: an X1S Pharos with the FFL5009R 5000K NW.
Unfortunately, I am an obsessive person.
I noticed that the X1S comes in both TIR and reflector versions. Then I noticed Firefly sells the parts separately. Then I discovered there was also an LLC25R super-narrow TIR.
Well, obviously I needed all three.
So I ordered the TIR X1S, the reflector, and the last LLC25R they had in stock. One host, every optical configuration. This seemed completely reasonable.
Then a day passed and my order hadn't been processed.
This was unacceptable, because I had also noticed something important: I had apparently ordered the last LLC25R.
So I emailed Fiona and begged her to please make sure I got the last one. I explained that it was my birthday (which it actually was) and asked her to please send me the last French optic.
Three hours later, I had a shipping confirmation.
The LLC25R was mine.
And that is how an X1S Pharos review became an optics test.
First Impressions
I received the X1S Pharos in Firefly's new hardshell case, along with my collection of additional optics.
The first thing that struck me about the X1S was the size.
For a 21700 light, this thing is compact. At approximately 119.5 mm long and 122 g dry, it feels substantial without feeling oversized. The 6063 aluminum body and excellent machining give it that wonderful solid object quality I liked so much about the Z1.
It feels like a piece of equipment.
And visually, the X1S in matte black HAIII with the stainless PVD-coated bezel looks like a piece of military equipment from the future.
Not modern tacticool. Future military.
The Colonial Marines have issued you the MX1S ILLUMINATION DEVICE, TIR.
REPORT TO DROP BAY AT 05:00Z.
It's a very good-looking flashlight.
If someone had shown me this thing 25 years ago and said, "In 25 years, this is what SureFire will be making," I probably would have looked at it and said:
"Sure."
The Optics
Here's where the X1S gets particularly interesting.
I have three optical configurations for the same light:
- Standard TIR
- LLC25R super-narrow TIR
- Orange-peel reflector
And remarkably, all three are good.
They just turn the X1S into three slightly different flashlights.
Standard TIR
The standard TIR gives the X1S something like a pocket-thrower personality without making it a dedicated thrower.
There's a defined, useful hotspot with real reach, but enough surrounding light that you can still walk around with it. You aren't looking through a pencil beam at the world.
That makes it an excellent general-purpose field configuration: a personal light that happens to have some legs.
If I could only have one optic for the X1S, the stock TIR makes an extremely strong argument for simply leaving the damn thing alone.
LLC25R Super-Narrow TIR
But I didn't leave the damn thing alone.
I begged a woman for the last French optic on my birthday.
The LLC25R takes the existing personality of the X1S and turns the throw knob considerably farther to the right.
The beam almost looks projected. It's extremely defined, extremely clean, and I don't see the weird artifacts or distortions that can sometimes appear when you start pushing a TIR toward this kind of narrow beam.
It's still recognizably the X1S.
It just wants to see what's over there.
Way over there.
Orange-Peel Reflector
The OP reflector may actually be the most interesting alternative because it turns the X1S back into something resembling a traditional high-performance flashlight.
It appears to give excellent candela and throw while producing considerably more spill than either TIR.
Firefly also did something clever here: the reflector uses a transparent centering gasket, so the auxiliary LEDs remain visible and functional.
The result may be the best configuration for someone who wants a conventional flashlight beam—strong hotspot, useful throw, and lots of surrounding illumination.
I don't think there's a bad choice among the three.
That's unusual.
More importantly, Firefly letting you buy the parts and change the personality of the light yourself is exactly the kind of enthusiast-friendly design I want to see.
The Beam: FFL5009R 5000K
The FFL5009R 5000K was a deliberate choice.
My Z1 Artemis uses the FFL5009R 3500K Rosy, and that emitter is almost offensively pretty. It's warm, rosy, high CRI, and makes everything look good. It's exactly the kind of emitter that makes flashlight people shine lights at walls and then nod approvingly at them.
The X1S is doing something different.
The FFL5009R 5000K is a neutral-white, hig5h-CRI emitter in a light that I intend to actually use as a field light. I wanted good color rendering and a clean tint, but I didn't necessarily want the heavily rosy character of the Z1.
And that's what I got.
The beam is clean, mostly neutral, and extremely usable. The FFL5009R does have a slight rosy bias, but it is hard to notice. Colors look like colors. Browns, greens, reds, wiring, painted surfaces, dirt, vegetation—you aren't fighting an ugly green cast or having everything washed into the same low-CRI approximation of reality.
At 5000K, it also feels appropriately daylight without becoming the cold blue-white that used to define high-output tactical lights.
This matters more in the X1S than it does in something I carry primarily as an EDC light.
The X1S has enough output and enough reach that I can realistically use it to examine something at distance. At that point, color rendering stops being an enthusiast checkbox and starts becoming useful information.
What am I actually looking at?
The FFL5009R lets the optical system do the dramatic stuff while the emitter mostly gets out of the way.
That's exactly what I wanted.
Three Optics, One Light
This is the part I really like.
These aren't three slightly different pieces of plastic that only a flashlight nerd could distinguish while shining them at a white wall.
They materially change the light.
Stock TIR: general-purpose field light with reach.
LLC25R: compact thrower.
OP reflector: hotspot-and-spill thrower.
And all three work.
That's useful information.
It's also exactly the sort of modularity I want from an enthusiast light.
Aux Lights and Andúril
The auxiliary LEDs are noticeably dimmer through the X1S optics than they are on my Z1 Artemis.
I'm completely fine with that.
The Z1 Artemis is EDC jewelry.
The X1S Pharos is, at heart, a field tool.
And this is where some of the things I used to consider Andúril toys suddenly become remarkably useful.
A bright 21700 light with configurable signaling modes isn't just amusing. It's equipment.
The beacon mode, for example, has configurable intensity and interval. I can configure the X1S to emit a bright flash roughly every ten seconds and have a perfectly serviceable location beacon.
Or I can shorten the interval to roughly 1.5–2 seconds and lower the intensity, producing something much more suitable for maintaining visual contact from a distance or potentially from the air.
There's also the pulsing beacon, which immediately struck me as useful for marking a dock, landing point, campsite, rendezvous point, or other fixed location.
These aren't hypothetical flashlight-party tricks anymore.
Put them in a compact, efficient 21700 field light and they become capabilities.
Then there's Power-Off Voltage Display.
Lock the light out and the auxiliary LEDs can indicate battery state while the light is sitting in your gear. No meter, no clicking through menus, no wondering how much cell you burned the previous night.
Look at the light.
You know.
That's good equipment design.
And, yes, it can still do candle mode.
Correct Design
That's what keeps standing out to me about the X1S.
There are a tremendous number of things going on here: Andúril, auxiliary LEDs, interchangeable optics, a high-CRI FFL emitter, a boost driver, USB-C charging, configurable signaling modes, a 21700 cell.
It would be very easy for this flashlight to become a pile of enthusiast features looking for a purpose.
Instead, they built a flashlight.
A compact one.
A very good one.
The enthusiast features are layered on top of a fundamentally sound field light instead of compensating for one that isn't.
And that's why I keep coming back to the same phrase:
Correct design.
The X1S feels like somebody started with the question, "What should a modern general-purpose 21700 flashlight actually be capable of?" and then kept going.
So, Colonial Marine:
Your illumination device has a high-CRI emitter, regulated driver, interchangeable optical system, onboard charging, programmable visual signaling, battery-state indication, and enough runtime to make all of those things genuinely useful.
Dropship loads in ten mikes.
Are you ready?