I am for Nichia 219C too.
Gearbest
Any thought given as to creating a single AA version of the F2?
No strobe or hidden strobe is my suggestion for AA driven flashlights.
Thanks for having a neutral tint emitter as a choice for the F2.
Dear all, the page has been fixed, It is our great luck to have your check form the site:
http://www.gearbest.com/led-flashlights/pp_613216.html
And thank you for your feedback to the emitter and other advice on its function.
@finges, Tangra, 264, thank you for your advice 
I will give instant feedback to the R & D team.
If you have any other good advice, please do not hesitate to me, when adopted, we will give you compensation, trust me.
Today received a F2 that I bought a great price, is a Nice package, a Nice flashlight (interesting design and good material finish), a little short on lumens power, but for the price is good. If in the future launch one version without strobe , I will buy sure more than one unit!!
Thanks jimahi for your review. I purchased my F2 in large part because of it. Well I just received my F2 today and it screams quality. Nice tint, nice machining, anodizing top rate. For the price nothing better. It is a very well designed tool.
I have just received mine from Amazon.it in neutral white, but with a smooth reflector…