The UI is near perfect - Lumintop missed to let the user change the momentary brightness in the electronic lockout status. mechanical lockout - to save battery - works flawless.
The regulation could be better, but its good.
Biggest drawback: missing clip. But if you have a Manker E02ii clip you can use it. If you want to see a proof of this, like this comment.
With a clip its a super impressed light to give to all your muggel friends and folks.
@Lumintop : for your 3.1 upgraded model:
-deep carry clip
-hcri option
-changeable momentary lockout brightness OR implement 2H in lockout for momentary turbo (or high)
-and please send me one for testing (-;