Emisar D4S review

This looks like it is taking advantage of your Aux LED pin 3 feature of Anduril?

WOW :heart_eyes: :+1:

Well done Hank! I can’t wait to get my hands on one of those bad boys.

  • Aux LED’s look awesome! :laughing: I really like the blue. Red might be fun as well. A few options would be cool.
  • I’ve read the magnet is “optional,” does that mean its removable from the tailcap?
  • 26650 battery config is great. Is there going to be a short tube offered for 23650?

Thanks TK for the review!

Yourrid, pretty sure TK said she got two tailcaps, one with and one without the magnet. :wink:

One thing I like about the 26650 format is the extra room it gives to spread out the LEDs on the MBPCB.

Although, I have never owned an 18650-based triple or quad, I have always been suspicious that the optics on some of those lights are covered a wee bit by the bezel. In practice, I doubt it makes much difference in output, but, hey, every little bit counts.

Thanks for a great review.

Very cool light! The larger mass should help a lot with temp regulation and extend turbo for quite a bit. I hope to see a 21700 tube for it.

Well there goes the flashlight budget again, gotta have one of these now.

Tagging to keep track of when they are going to go on sale…

Maybe these are the LED choices.
On Int-Outdoor there are new Led-Boards and looking like fitting the D4S. Hi (4000, 5000, 6500K) und Nichia (5000 90CRI)

https://intl-outdoor.com/index.php?main_page=products_new&zenid=54a8ff7bbdb3841d13629ac980efff52

How difficult will it be to exchange these cyan coloured micro-size LEDs by red coloured ones? Are these LEDs hard to get or is it a standard LED that can be bought at Mouser, Arrow, Kaidomain and so on?

I wonder why Hank took cyan/blue LEDs. Red light would be better for maintaining oneself’s night vision ability and - IMHO - looks more fancy like those unaffordable Oveready BOSS lights. Green light would also be a better option for the human eye is most sensitive on the wavelenght of green light (~ 550nm). So, green light even at micro-lumen-level would be far better visible than blue light.

Maybe all this has something to to with John Rambo? :wink:

Toykeeper:
Has iOS v3 a reset to factory defaults function?

Thanks for the review.

This looks great, longer high lumen runtimes than the D4 with more thermal mass. Makes me glad I haven’t snapped up a D4 or a different 26650 light yet so now I can say I need this for two reasons.

Had to smile, Cujo needs mo powah! :wink:

:smiley:

hm…but this is not an edc anymore:)

Why not vresto? A belt sheath will put it at hand at all times and you’ll forget it’s there til you need it. Kydex or Holstex can easily make a horizontal holster to carry it on the belt or the hem of pants or shorts, works very well.

Edit: Know any LEO? Ask them what they carry every day…… come on man, Cowboy Up! :wink:

for 26650 i would rather buy DN70 or so…for me more practical.but surprised,that this one is so throowy…

I’ll chime in on this. It helps to have some quick facts about how blue light affects your circadian rhythms:

1. When the sun sets, you have primarily red light in the sky - staring at a bright computer screen at night will delay the onset of sleep. Unless you’re holding the blue LED’s up to your eyes at night they won’t do anything to your sleep patterns. You’re more likely to have disrupted sleep from looking at your phone in bed or otherwise not practicing good sleep hygiene.

2. Blue light doesn’t cause cancer. It’s in the visible spectrum - it doesn’t have the energy required to break DNA strands. UV light does this - this is what causes sunburns and cancer.

I spent a few minutes googling and it sounds like there is an increased risk of prostate cancer from some studies in people chronically exposed to blue light. What does this mean? What it’s NOT saying is that Blue light = cancer. What it IS saying is that if you chronically sleep-deprive yourself or otherwise are stressed over many years, you will have an increased risk of certain cancers. Even then, I didn’t see any actual odds ratio or relative risk or P-values given - so an article could say ‘increased risk’ even if the risk is only increased by .001%.

What I can say for certain is that there is an increased risk of cancer from smoking / tobacco use, chronic daily alcohol use, a family history of cancer, hep B / C, or chronic exposure to sunlight (to name a few).

For what it’s worth, my background is an M.S. in physiology with specialization in ovarian cancer research and I am finishing up my last year of medical school.

I bought a packet of SMD LED’s in like 8 different colors for less than $10 on ebay. Like 160 LED’s, seriously. Make it whatever color you fancy with a few minutes use of a hot air gun. :wink: Mix and match, create your own color spectrum, be imaginative… :slight_smile:

Edit: Look, 5 colors… 20 pcs each… 100 SMD LED’s for $7.99 on Amazon

Or on ebay, 500 pcs for $3.49! 100 each in 5 colors!

A single Tritium vial in the smallest 1.5mm x 6mm is ~$7, fwiw. :wink:

I wonder if international outdoors or mountain electronics is going to have a driver/firmware to support a clicky version of the sandwich mcpcb.

I think these marker LEDs are a great idea, if well done with good efficiency (TK, are you using the trick with the internal pull up, plus an external resistor, to get the various levels from one pin ?).

Tritium vials are neat, but have a 12 year half life, even if the internal phosphor survives that long. Now 12 years might seem like an age, but it’s not. And you’ll notice the dimming long before then.

I have a small collection of British prismatic marching compasses, the most recent ones were surplus stock, sold off because the tritium vials had degraded and it was no longer cost effective to have them re-tritted, as used to be the practice, or they just didn’t need so many anymore.

These things: PRISMATIC COMPASS M-73

My most historic one, from WW1, was given to me by my grandfather and still has it’s radium paint, still glowing, but I keep it very carefully, and it doesn’t come out for use.

Similarly my father’s WW2 Negretti & Zambra pocket compass.