TK's Emisar D4 review

Thanks for your informative post.

I generally twist power off on my D4S, just to be over cautious. :blush:

I think a pocket friendly 18650 (with power twist off) OG D4, or two, would serve
As handlebar lights / hand warmers.

A dual purpose D4 for winter bike rides? :beer:

Since you already have tested it, which max level would you say is pocket safe?

I forget what mine is set at right now. I think I’ve set the max ramp at 30 or 35 steps below max turbo brightness.

I’ve looked through the thread but didn’t see anything and I’m sure it’s been asked already but will the stainless bezel from the D4V2 fit the original D4?

I’m not sure, but I think the D4v2 bezel threads may be slightly different than the D4v1 bezel threads. I’ve had difficulty swapping that particular part between the two. I was able to put a v1 battery tube on a v2 head though.

Cool thanks, just got a D4 on trade and might try it out. Looking to get the deep clip, 10621 optic and the bezel. It’s only a few bucks and if it doesn’t work I can pass it on.

Yes … I have the SS bezel from a D4V2 on a grey original D4 right now. It fits perfectly.

Great! I’ll order them tonight.

P.S.

TK, it’s green too lol.

mine did not fit. d4 ti bezel to d4v2 ti

I also tried sticking my blue-colored D4 Ti bezel on my D4v2 Ti’s copper head. it fit fine.

Note however, that some of the titanium pieces… the bezel and the tailcap… will not fit on the aluminum head and body tube. But that is not unique to the D4v2. The original D4 and its Titanium version had the same problem.

i tried this one. does not fit. the threads are slightly different. all Ti’s. was gomna swap the heads since the v2 is only available in raw color.

This video shows that the SS bezel and D4V2 magnet cover is suitable for D4V1 https://www.youtube.com/watch?v=3bG-JNVL0Nw

Not all V1s fit ss bezel. Only for those from later batches. For example, my black D4V1, which I bought at the end of the V1 sale, has a different thread than the white D4. Ss bezel matches black, but not white. It’s a lottery. If you bought D4V1 late then it will rather match. For some reason, after putting ss bezel on the white, the gap is much larger.


I received a secondhand D4 today, how does one go about updating the firmware on this light?

Also, is it recommended?

You can if you want to, but it doesnt really matter unless it was avery early D4 with the first gen thermal management. Personally if it hasnt been done already id just switch it to Anduril and call it a day.

Check out the first post of this thread. You need to pop out the driver in order to flash the Attiny with a SOIC8 clip.

I’m not looking to take anything apart, but what does switching it to Anduril mean?

Changing the Firmware from one user interface to another. The D4 originally came with a firmware called RampingOS, later batches of the D4 came with an updated RampingOS or optionally Anduril.

If you dont want to take the light apart, you cant update or change anything.

What are the differences in the ramping OS’s, how would I know which I have?

Also, what changes does the Anduril have?