Released in 1954, the Rolex GMT-Master resulted from a collaboration between now-extinct airline Pan Am and Rolex on a watch that would display the time across two time zones at once. Thanks to the popularisation of commercial air travel, planes were becoming more advanced and traveling longer distances. This resulted in pilots crossing time zones during flights more frequently, and thus a need for uniformity across the aviation industry was highlighted. To eliminate errors caused by time confusion, the industry adopted a standard time-zone, Greenwich Mean Time. As such, the GMT-Master's fourth hand, its 2nd hour hand, was used to constantly display Greenwich Mean Time, as its model name implies, while its regular hour hand displayed local time. While the aviation industry's standard time-zone switched to Coordinated Universal Time (UTC) in 1972, the name of the legendary GMT-Master was far too long in use for Rolex to change it. Today, the GMT-Master has become one of Rolex's most iconic models, with very few pilot's watches, if any, rivaling its level of fame, popularity, or signature design – and it certainly looks like it will stay that way. Released in 2012 and discontinued in 2019, the Rolex GMT-Master II ref. 116710BLNR "Batman" was the first of any GMT-Master II model to feature a bi-color Cerachom bezel insert, with it introducing a black and blue bezel insert to the GMT family for the first time ever.

Watch is in overall very good condition. The steel case has some scratches on the polished sides and a few small nicks on the case edges, most noticeably on the lower right lug. The bezel has some light scratches. The dial and hands are pristine. The steel Oyster bracelet has scratches on the polished center links and clasp, with negligible play between the links. The bracelet currently fits a 7" wrist and has 10 links, 2 of which are removable.

Embracing the GMT-Master's iconic heritage and fusing it with a new aesthetic through its blue and black bezel, the Batman ushered in a new era for Rolex, an era that has come to define their modern offerings.