TK's Emisar D4 review

@Di_Joker, the LH351D is more efficient than the XP-L HD, so it will be producing more light for the same heat.

However, since its VF is a bit lower in the 70CRI version, it will draw a bit more current, so it will get slightly hotter.

It will still be not as hot as the Nichia 219C though.

@BlueSwordM, Thank you! I completely forgot about SST20 4000K NW CRI95, as they are in the heat in comparison with XP-L HD?

I do wish there were a longer tailcap available. I just want it to be longer, but would happily accept additional functionality with a strong magnet and lanyard loop, maybe even a tripod mount.

So sad. Those poor mice…


Now I wait. I am also concerned about CC and magnets, my PrimePro A1 has been in my front pocket with my wallet for a few weeks, all has been well.

This magnet is much stronger, I wish I would of went with a thinner 1/16”. I got the 7/8 x #8 x 1/8, N42 NI, C-sunk.

Don’t try and spread the glue around with a metal knife like I did. Yes I did.

Thanks for posting this. I looked a bit for a countersunk 1/16” magnet, not found yet. Why countersunk, or even a hole in the magnet at all? Were you able to find a single magnet, or did you end up buying a handful?

Looks like you used super glue for the attachment, guessing it is still holding up fine?

First time trying this glue. I wouldn’t call it a super glue. Sets in 30 minutes cures in 24 hours. Don’t stick your fingers together like super glue does.

A 1/16th inch disk would probably been enough. Was thinking the hole could be filled with epoxy or black JB weld. I still might. I have had better luck completely covering neo magnets in the past. They tend to chip off on the edges. They are brittle.

K&J Magnets is where I found these. I will probably order some more. I remember a coated version.

I don’t feel I need to glue the clip. It has not moved at all in the few days I have carried it.

This is still a work in progress. I also would like a way to attach a small 3” loop lanyard. It might work on the clip itself. Will update.

I love magnetic tailcaps. Ideally, I fit a small magnet within the tailspring, but some lights won’t allow that.

For securing magnets to the outside of tailcaps, I’ve had good luck with Loctite 5-minute Clear Epoxy. I scratch up the nickel coating of the magnet and the anodizing of the tailcap before installing.

I suggest N52 grade magnets, which are stronger than N42 grade.

My Zebralight SC5w weighs 90 grams (3.2 oz) with an AA Eneloop installed.

Amazingly, a 1/32” thick x 3/4” diameter N52 magnet holds the SC5w to even a painted vertical steel surface. My H51w has one too.

The D4 with a cell weighs about 120 grams, so I’d go with at least a 1/16” thick N52 just to be safe.

Add SST-20 options for the D4.

SST-20 6500K: 4200lm

SST-20 5000K: 4000lm

SST-20 4000K/3000K 95CRI: 3000lm

please consider bringing back the green and cyan color options, the available now are dull and boring .

Oh my poor wallet! Still semi-holding out / hoping for different body colours before I buy more.

Hank, is it upgraded to RampingOS V3?

FYI: the current batch of aluminum Emisar D4 at International Outdoors are partially lego-able with the all Titanium D4s.

Their aluminum heads fit on the titanium body tubes.

Were the original batch not lego-able? O saw several Ti with aluminum heads after they came out.

Any opinion of the new SST20 led compared to the Nichia and XP-L 5000k?

I second Alex64’s request. I am interested in any information on the SST20’s in general.

I’d like a floodier version with XPL; the Nichia doesn’t have enough output and efficiency. Considering the result with the XPL-HD in the D4S, I’d like it in the D4 as well. Should maintain the lumens and drastically spread the beam.

You can put the floody optic instead of the regular one. Would that be sufficient?

I don’t know. I have no idea of lumen and throw with the frosted optics.

I ordered mine with frosted optics,then got the narrow to swap. I noticed big difference. Almost like 2 different lights. They are both bright, lemons very close.