Rolex has unveiled their famous blue-and-black GMT II in 2013, and it was a hit straight away. Named ‘Batman’ by collectors, this watch deserves the name not only thanks to color but for the smart innovations that were used in its production.Rolex ‘Batman’ marks the era of innovation breakthrough for the brand. After all, it was the first time the company was able to create a two-color bezel made completely out of ceramic. Ever since the black-and-blue GMT Master II has been popular among both collectors and investors. Interesting fact: ever since presenting the watch in 2013, its price on the market is constantly increasing.