Hublot

Hi all,
I just buy the Hulot watch:






but i don't sure that it's authentic or not, and what calibre does it use ( ETA 2892A2 or 2894)?
I need your helping!
Thank you so much,

This is a legendary model. It's the first one people do not mix only to Audemars Piguet Royal Oak but some also to Patek Philippe Nautilus. 

Thank you, Kari
And do you know what calibre?
Best,

As to whether it's a fake or not, the best thing is to contact Hublot with the serial number.