Eagtac D3C Titanium Flashlight Review

Eagtac D3C Titanium Flashlight Review

The Eagtac D3C Titanium flashlight offers a lot in a little package. This one has a Nichia 219c emitter with 4000K and High CRI. Read on!

Official Specs and Features

Here’s a link to the Eagtac D3C Titanium product page.


This product specifically has only one body option.  There are at least three emitter options, and you might see even more listed on some websites.  My copy is a Nichia 219c, and I think that’s a fantastic choice for this host.

Also worth mentioning in this section is the D25C Clicky MKII.  This is an essentially identical light to the D3C Titanium, but it’s aluminum.


The Eagtac D3C Titanium flashlight sells for $79.90 at KillzoneFlashlights.com (referral link.)

Short Review

There are a bunch of things to like about the Eagtac D3C Titanium flashlight.  The titanium host is fantastic.  The beam profile is fantastic.  That this light uses a 4000K high CRI Nichia 219c is great, too!  It can run on multiple cell types.  The light doesn’t seem to have low voltage protection.  Another potential downside is the user interface, but that’s strictly a preference thing – I find it quite useful really.

It could be stated that this light is “dated” but it’s not really.  It’s been released for a while, yes, but the emitter options have kept up to date, so it’s still very relevant!

Long Review

The Big Table

Eagtac D3C Titanium Flashlight
Emitter: Nichia 219c (4000K, CRI92)
Price in USD at publication time: $79.90 at KillzoneFlashlights.com
Cell: 1×16340
Turbo Runtime Graph High Runtime Graph
Switch Type: E-Switch
Quiescent Current (mA):
On-Board Charging? No
Claimed Lumens (lm) 360
Measured Lumens (at 30s) 402 (111.7% of claim)^
Candela per Lumen 10.6
Claimed Throw (m) 113
Candela (Calculated) in cd (at 30s) 226lux @ 4.374m = 4324cd
Throw (Calculated) (m) 131.5 (116.4% of claim)^
Item provided for review by: KillzoneFlashlights.com
All my Eagtac reviews!

^ Measurement disclaimer:  I am an amateur flashlight reviewer.  I don’t have $10,000 or even $1,000 worth of testing equipment.  I test output and such in PVC tubes!!  Please consider claims within 10% of what I measure to be perfectly reasonable (accurate, even).

What’s Included

Eagtac D3C Titanium flashlight what's included 

  • Eagtac D3C Titanium flashlight
  • Split ring
  • Spare o-ring
  • Lanyard
  • Nylon carry case (formed, not soft)
  • Manual etc

Package and Manual

Eagtac D3C Titanium flashlight box

Eagtac D3C Titanium flashlight manual

Let’s put a pin in this manual, but I have much more to say about that later.

Build Quality and Disassembly

Eagtac D3C Titanium flashlight


The Eagtac D3C Titanium is a solid flashlight.  There’s a good bit of design all around, including the pineapple-style body.  Below you can see the minimal-depth cooling fins.

Eagtac D3C Titanium flashlight cooling fins

Eagtac D3C Titanium flashlight pineapple grip area

This branding which is “fairly” sparse, is etched into the body.  Below is the Eagtac logo.

Eagtac D3C Titanium flashlight tailcap

Eagtac D3C Titanium flashlight body

The engine (which I did not remove) is brass.  These threads are very smooth and not too long.  If you intend to do much programming of the light, you’ll want the threads to be very smooth.  One thing I did miss with regards to programming was any form of grip on the head at all.  The smoothness makes repeated twisting annoying (but not necessarily “difficult”)

Eagtac D3C Titanium flashlight head off

On the head end is a simple brass contact.  The tail has a spring.

Eagtac D3C Titanium flashlight contact points

Size and Comps

Body Diameter: 0.78 inches (20 mm)
Head Diameter: 0.78 inches (20 mm)
Length: 2.9 inches (75 mm)
Weight w/ battery: 1 ounces (29 grams)

If the flashlight will headstand, I’ll show it here (usually the third photo).  If the flashlight will tailstand, I’ll show that here, too (usually the fourth photo).

Eagtac D3C Titanium flashlight in hand

Here’s the test light with the venerable Convoy S2+.  Mine’s a custom “baked” edition Nichia 219b triple.  A very nice 18650 light.

And here’s the light beside my custom engraved TorchLAB BOSS 35, an 18350 light.  I reviewed the aluminum version of that light in both 35 and 70 formats.

Eagtac D3C Titanium flashlight beside torchlab boss 35

Now you might have some thoughts about the size of this 16340 flashlight.  But it’s at worst “not the biggest.”  It’s also not the smallest.  You could say it’s a happy medium, or that it’s perfect, or – it’s all subjective.  The three lights below all use a single 16340 cell.

Eagtac D3C Titanium flashlight with other 16340 flashlights

Retention and Carry

This Eagtac D3C Titanium flashlight has a screw-in pocket clip.  It’s not a standard hole spacing pocket clip, but it’s fairly common from Eagtac.

The clip has a good shape, holds the flashlight at a reasonable depth, and overall is nice.

Eagtac D3C Titanium flashlight pocket clip screws

Below is a shot of the top of the light.  This is important so that you can see the depth of the metal into which the clip screws fit.  There’s a good depth here, and the clip is very snug.

Also on the tailcap are lanyard holes.

Eagtac D3C Titanium flashlight lanyard holes

The included lanyard is actually very refined – it has a metal attachment that fits into the loops.

Eagtac D3C Titanium flashlight lanyard in use Eagtac D3C Titanium flashlight lanyard in use
But while fitting into those loops, the metal part can slip into the notch, so that tailstanding is possible.

Eagtac D3C Titanium flashlight lanyard in use

Finally, the nylon pouch is great for belt carry of the Eagtac D3C Titanium flashlight.

Eagtac D3C Titanium flashlight nylon pouch Eagtac D3C Titanium flashlight nylon pouch

The light will fit into the pouch in either orientation but is not usable while inserted.

Power and Runtime

Power to the Eagtac D3C Titanium flashlight is provided by either a single 16340 cell (lithium-ion, 4.2V) or a single CR123a (1.8V).  All of my testing was performed with a 16340.

Eagtac D3C Titanium flashlight with 16340 cell

The cell is installed in the usual way – positive terminal toward the head.

Eagtac D3C Titanium flashlight with 16340 cell installed

I did not have any flat-top cells to test, but I’m fairly certain you’ll need button-top cells for this light.

Here are a few runtime tests.  Toward the end of the cell life, the main (“only”) emitter blinks off and on to alert about low voltage.  This alert becomes slower (more off than on) and eventually the light does turn off.  In every test, the shutoff appeared to be 1.47V, which is extremely low for a 16340 cell.  I thought that 1.47V might just be a cell shutoff, but on bench power, the shutoff does seem to be around 1.4V, actually.

Eagtac D3C Titanium flashlight runtime graph Eagtac D3C Titanium flashlight runtime graph Eagtac D3C Titanium flashlight runtime graph

The lack of low voltage shutoff is a downside (yes, it is) but, there’s truly ample warning in the form of a blinking emitter (you’ll not miss that).

Otherwise, the runtimes look pretty great – we see fairly flat output on anything but Turbo, and even Turbo holds for a little while before stepping down.  Sure, 400 lumens isn’t all that high, but I’ve found the output levels to be perfectly adequate when paired with an appropriate task.  For example, I’m not trying to see across a field with this light. But getting from the car to my house, or from the desk to the bathroom in the dark – even the non-400 lumen modes are more than adequate.

Modes and Currents

Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens Tailcap Amps
Turbo 360^ 0.6-1h 402 0.91
High 1.5h 210 0.48
Medium 4.5h 73 0.19
Low 3 10h 30.6 77.1mA
Low 2 18h 17.4 44.6mA
Low 1 25h 11.7 31.5mA
Moonlight 3 50h 6.2 18.5mA
Moonlight 2 200h 0.5 5.3mA
Moonlight 1 300h 0.1 3.76m

^ These official specifications are taken from the similar Eagtac D25C Clicky MkII, which also includes a Nichia 219c version.

Pulse Width Modulation

The order of these PWM graphs is from lowest to highest.  This order is not what you can click through and experience…  But the lowest output is on the left and the highest on the right.  I’ve seen some forum posts about this light having PWM.  In fact, it doesn’t use PWM to modulate the modes – what we see is what I call “sawtooth” and the light doesn’t go to an off state in the valley (which is a hallmark of PWM).  And even this sawtooth is very fast and unlikely to be a burden.

For reference, here’s a baseline shot, with all the room lights off and almost nothing hitting the sensor.  Also, here’s the light with the worst PWM I could find.  I’m adding multiple timescales, so it’ll be easier to compare to the test light.  Unfortunately, the PWM on this light is so bad that it doesn’t even work with my normal scale, with is 50 microseconds (50us).  10ms5ms2ms1ms0.5ms0.2ms.  In a display faster than 0.2ms or so, the on/off cycle is more than one screen, so it’d just (very incorrectly) look like a flat line.  I wrote more about this Ultrafire WF-602C flashlight and explained a little about PWM too.

User Interface and Operation

There’s a single switch on the Eagtac D3C Titanium flashlight.  It’s a reverse clicky mechanical switch.  That white Eagtac branded boot is in fact, a glow switch cover!

Eagtac D3C Titanium flashlight reverse clicky

The action is fairly low here, but this clicky is very loud.

Technically there are two mode groups for the Eagtac D3C Titanium flashlight.  These two groups depend on the tightness level of the head.  With a fully tightened head, Group 2 is accessed.  Group 2 is the “Turbo/Strobe”) group.  With the head slightly loosened, Group 1 is accessed.  This is the group with the lower steady outputs but also has some strobes too.

Here’s a UI table for Group 1!  I should note that many things about the light are programmable.  For example, the starting mode is programmable for Group 1.  Mode memory can be iterated, too.  I’ll try to account for those settings in the table below.

I’ll also say right here that the manual…. whew the manual…  The manual really seems to be an umbrella manual for multiple Eagtac lights.  The D25A II, D3A, D25A2, D25C II, D25LC2 II, and maybe more, including this D3C are sort of covered by this manual.  That’s great!  Until it’s not… and when it’s not is when you need to know something very specific about your light.  I fought with the manual for hours about programming and finally figured some things out.  Suffice to say that I don’t think there’s actually a manual specifically for every feature of the D3C Titanium, but maybe the info here will help.

State Action Result
Off Click Moonlight^ (unless programmed otherwise!)
On Click Off
Off Tap No action
On Tap (up to around 8 taps) Mode advance (Moon, Low, Medium, High)
On Repeated taps Mode advance (Moon, Low, Medium, High, Moon, Low, Medium, High, Strobe, SOS, Beacon, Low Flash) Cycle

^ Two points here.  The manual says moonlight can be turned on or off, but I was unable to confirm this.  It seems the Eagtac D3C Titanium flashlight always has four levels of steady output in Group 1.  Also, the manual says you can iterate mode memory for certain models that this manual covers, and it does not seem to be possible to iterate mode memory for the D3C.  It seems that Group 1 always starts in Moonlight.  (Both of these things are great for me, as that’s what I’d want anyway.)  The manual sort of confirms this about the D3C if you allow the statements about the D25C MkII manual to cover the D3C as well (and that’s reasonable; they’re very much alike).  The bigger point here is that the manual is confusing, and a separate manual for each light would have been much better.

Here’s a UI table for Group 2!

State Action Result
Tightened head, Off Click Turbo
On Click Off
Turbo Tap Strobe
Tightened head, Strobe Tap Turbo

Now, let’s talk about programming this light.  Programming is performed by putting the light in some certain state, then twisting the head on and off multiple times.  You are very unlikely to do this accidentally, which is great.  You’re also likely to find it to be a pain to do, which is less great.  But I am to help here.

First, you should note that the Eagtac D3C Titanium flashlight (specifically!  And not necessarily other lights covered by this blanket manual) has three discrete output levels for both Moonlight and Low.  Since this is the Nichia version, and the Nichia version isn’t really listed on the D3C product page, I can’t say what the official specs are for those modes.  But they’re there!

Each level (or output option) of Moonlight is tied to a respective level of Low.  So Moonlight level 1 will always carry with it Low level 1.  And Moon 2 goes with Low 2.  And Moon 3 goes with Low 3.  It is not possible to program Moon 1 with Low 3, for example.  Once you get that, then programming makes much more sense.  To program the Moonlight/Low output levels:

  • Turn the light on to Moonlight 
  • Wait >1s
  • Tighten and loosen the head 3x

This will advance the output levels by one level.  From 1 to 2.  Repeat the procedure to go from 2 to 3.  Repeat the procedure to go from 3 back to 1.  Just to tell you where I went wrong, so you can laugh at me.  It was initially (by “initially” I mean for maybe 2 hours) unclear to me that programming Moonlight also programmed Low.  So I was moving to Low and attempting to program the output but to no avail.  I was confirming this with a multimeter, so I could say definitively that the output level on Low was not changing with those programming attempts.  Once I understood that Low was programmed with Moonlight I could read the manual in such a way that this makes sense.  But not until I figured it out manually (and was also able to confirm with a lux meter that the output changes, and with a multimeter that the current changes.)  So now you know, too!

The manual covers Mode Memory programming, but that’s not for this light. What can be programmed on the Eagtac D3C Titanium flashlight is the startup mode for Group 1.  This could be seen as a faux mode memory.  To me, it’s better than mode memory, but I know some users love mode memory!  To program the Startup level setting

  • Access the output level in Group 1 you wish to set as startup
  • Wait >1s
  • Tighten the head
  • Wait >1s
  • Loosen and tighten the head 3x

Programming these few options is not at all hard once you “get it.”  But I can promise you that the manual doesn’t help much, and without a multimeter, you might never figure it out (without my help. 😉  )

LED and Beam

Many emitter options are available for this little flashlight.  KillzoneFlashlights.com carries a Nichia 219c version and a Cree XP-L HI version.  Both of those are probably fantastic, but I’m pleased to be able to present data on the Nichia version.

Eagtac D3C Titanium flashlight emitter

The light uses a deep reflector.  There’s a bit of texture, giving the beam a great profile.

Eagtac D3C Titanium flashlight reflector Eagtac D3C Titanium flashlight emitter on

This beam is what I like out of reflector lights.  Hotspot, mostly, with little or no artifacts, and “some” spill.

Eagtac D3C Titanium flashlight emitter on

Sidenote about the beam:  The bezel is smooth, so light doesn’t escape when headstanding.

Eagtac D3C Titanium flashlight emitter on headstanding

LED Color Report (CRI and CCT)

Here’s CRI for most of the modes.  I tested CRI/CCT before I completely figured out how to program the light, but on the lower modes, this data won’t be any different.  From left to right it’s lowest to highest.


These beamshots are always with the following settings:  f8, ISO100, 0.3s shutter, and manual 5000K exposure.  These photos are in the same order as the PWM graphs above. This order is not what you can click through and experience…  But the lowest output is on the left and the highest on the right.

Tint vs BLF-348 (KillzoneFlashlights.com 219b version) (affiliate link)

I keep the test flashlight on the left, and the BLF-348 reference flashlight on the right.  Same order as the beamshots above.

I compare everything to the KillzoneFlashlights.com 219b BLF-348 because it’s inexpensive and has the best tint!


What I like

  • Great titanium look
  • Interesting programmable output levels
  • Programmable startup mode allows faux mode-memory
  • High CRI emitter (92 or higher)
  • 4000K CCT is great for EDC
  • Simple user interface that excludes Turbo
  • Many emitter options are available

What I don’t like

  • No low voltage protection
  • Strobes in Group 1 (I really wish they were relegated to all being in Group 2).
  • The manual poorly covers this specific flashlight

Parting Shot

Eagtac D3C Titanium flashlight


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3 thoughts on “Eagtac D3C Titanium Flashlight Review”

  1. Nifty little light. It’s a shame they skipped LVP on a small single-cell light where usage times might easily exceed overall capacity.

    Have you seen the new Sofirn SF47? I’d love to see a review of that light. I mean the 4xSST40 version. Not the (T) variant with the Osram emitters. The flooder is not well-reviewed yet.

  2. Your reviews are so informative. Can you do the D3A TI sometime? I just ordered two but it’ll take a month to get to me. As a non technical flashlight noob, I’d love to learn more about them!

    1. I would love to! I don’t have one though and that’s not on my radar for purchase, unfortunately. 🙁

      killzoneflashlights.com was considering sending one – maybe put a bug in their ear about it. 😀

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