Description: Rolex GMT-Master II ref 126710 Pre-owned Rolex GMT-Master II ref 126710 (2019). The first Rolex Batman debuted in 2013 via ref. 116710BLNR. That watch was the very first to feature a solid ceramic insert in two colors, a design element previously considered too difficult to produce commercially. Rolex mastered the skill, though, paving the way for more two-tone GMT bezels in ceramic, like the Pepsi, and, more recently, black-and-grey Rolex Bruce Wayne.