People, it is a completely sh(it) torch, in almost every way possible.
You may think that you are getting a bargain, that just needs a little bit of fixing up, but really you are not.
Waste your time if you must. You still could have the real deal instead.
I sympathise with Banggood, they got lumbered with a huge pile of these useless dangerous things, because nobody there (Neal, CPF It, or whoever) had their eye on the ball. Or just on venality.
The unsold stock all got sent back to Manker for re-work, but that was also incompetent.
At the end of the day, Manker made them, it is almost laughable how badly they did it. They tried to rip-off the Jaxman Z1 but utterly failed in every important area. They even scammed Jaxman into providing a hundred or so of their excellent aspheric lenses, for the first bunch. Quite what is fitted now is a mystery to me.
No wonder Jaxman was fizzing. I could tell you about the treachery, lying, deceit, and the cowardice of senior CPF It. personnel, but you probably wouldn’t believe it, it was so bad.
Anyway, snap these up if you must, there are plenty left in the UK warehouse (that is also the EU warehouse.)
Then feel a bit dirty about what you have just done.
Oh, and that stupid 2016 logo is making look aged very fast. Which it is.
Banggood, clean out the decks (I think you already are). Then put this behind you. Better still, just find a recycler who will take them away for scrap.