I vote for engineering mode, I have 21 options for choose my preferred low or moonlight…is great 21 steps for the moonlight, if you like the ultralowest you have less than 0,1, or you can choose, 0,2-0,3…… to a maximun step around 4 lumens.
4 modes is good, but why not the option of engeneering mode? is not obligatory use it…… 
Trevi, 10440?
Thanks for the review Budda! In the UI instructions, it mentions “dragon breath mode”. What is that?
E02 can run of 10440 batteries in emergency situation if you don't have AAA batteries.
There is only one output mode when use 10440.
Thank you for answer. I have e11, u11, u21. I like them very much!
Wow,19.99 with the manker quailty?
It sounds nice.
The upper body design reminds me Xtar Warboy H3
You mean X5?
A headlight without a headband, really?
Mode spacing definitely looks odd and a 90CRI option would be nice too.
X5 may be the one. Manker donated entire sale of like 50 units.
Yes,we did that. Thanks to the members who bought these X5.
Will you have AA version of E02 soon?
why you know our plan?
So, that’s a yes? That’d be my preferred format for this.
+1 I agree AA / 14500(protected) NW /WW :+1:
Yup. This light begs to be a 1xAA neutral white light that comes with a simple headband. (I presume targeting the Zebralight market, like the T01 does, from the looks of it.) Still, it is very impressive output for a 1xAAA light, but unfortunately AAA batteries just don’t hold enough juice to give them useful runtimes for outdoors.
Thanks for the review, Buddha.
+1 for a AA version and headband.
Wow, that’s great !
yes, it's on our plan, I think you will like it.
Great, hopefully it will take protected 14500 and have lower working voltage. My E11 doesn’t power on if it goes below 1.2v using Eneloops
I can't find the E02 anywhere...anybody of the business people here willing please to make a groupbuy for that ... LOL :P
ALso would be possible maybe for the people who received the samples from Manker to test it with a 10440?