Rolex Gmt-Master 126710BLNR Batman Dial Oct 2021which implies “Blue Black.??That is definitely needless to say in reference towards the blue and black bezels of your ref. 116710BLNR and ref. 126710BLNR, which happen to be constructed from Rolex’s proprietary ceramic alloy that the business calls Cerachrom.Rolex have up-to-date its black and blu