TK updates it so quickly that it’s hard to tell what the latest is 
Personally, I’m looking for at least version 420 from 2019-05-22, but I think the improved stepdown was merged two or three versions after that (and to my knowledge, the latest is revision 428 on 2019-06-02).
edit: and here is a more readable changelog.
Awesome that V2 is coming! Can’t wait!!!
I haven’t even received my latest D4 yet and this comes out…
And 424 offers manual memory, which I find to be a huge improvement. Prior to 427, that has to be enabled at compile-time, but it’s the default now.
Excited to buy…
Hank are you have any plan for 21700 in your product ?
Yes, sure, it’s under developing.
Looks great… But I wish it had higher regulated current. I would rather have a 4mm longer light to accomodate 6 more AMC 7135 chips on the cell’s side of the driver, like the FW3A. 750+ lumens vs only 150 lumens regulated current.
I’ll pass on this one.
Please let this one have a FET+6+1 driver or something in that range?
Will titanium version of the D4v2 be created?
Damn. I was done buying flashlights… Spent so much money already lately on lights and trits, but got to have one of these. My smooth green D4 deserves to become a shelf queen.
Nice work Hank, in the lead for best pocket rocket in the market again.
It’s still FET+1×7135 driver
Can’t wait for it to be available! Hopefully we see updates on the other Emisar lights too.
Hank, is this being done through a multi-color micro SMD LED like this one?
Wow, how does this work? Is that a TK question?
That looks awfully small for a multi led SMD.
I think the ad you posted is for 25 LED each of 5 different colors, not for a multi LED SMD.
Hank any chance for LH351D in this light ? would be nice have a multi emitter light with that…
OMG
That’s a deal breaker for me.
