Rolex GMT-Master II 126710BLNR – Batgirl Blue & Black Bezel Jubilee

The Rolex GMT-Master II 126710BLNR is one of the most recognizable modern GMT watches, combining Rolex Oystersteel construction with a distinctive blue and black Cerachrom bezel and five-piece Jubilee bracelet. Widely known among collectors by the nickname “Batgirl,” this GMT-Master II is designed for travelers who need to track multiple time zones while maintaining the durability and precision associated with Rolex.

Rolex GMT-Master II 126710BLNR

The Rolex GMT-Master II 126710BLNR features a 40mm Oystersteel case and a black dial with highly legible Chromalight hour markers and hands. The defining visual element is its bidirectional 24-hour bezel fitted with a two-colour blue and black Cerachrom ceramic insert.

The blue and black bezel provides the watch with its distinctive modern appearance while also serving an important GMT function. Together with the additional 24-hour hand, the bezel allows the wearer to read a second time zone while the conventional hour, minute and seconds hands continue to display local time.

Blue and Black Cerachrom Bezel

The two-colour Cerachrom bezel is manufactured from Rolex’s proprietary ceramic material. The bezel is bidirectional and graduated over 24 hours, providing the reference scale required for the GMT function.

The blue and black colour combination is the reason collectors commonly refer to the 126710BLNR as the Rolex Batgirl. “Batgirl” is an informal collector nickname rather than Rolex’s official designation.

Oystersteel Case and Jubilee Bracelet

The 40mm case is manufactured from Oystersteel, Rolex’s corrosion-resistant stainless-steel alloy. The Oyster architecture incorporates a screw-down caseback and winding crown, while the scratch-resistant sapphire crystal includes the familiar Cyclops lens over the date.

This configuration is fitted with a Jubilee bracelet, featuring five-piece links and an Oysterlock safety clasp with Rolex’s Easylink comfort extension system. The combination of the Jubilee bracelet and blue-and-black bezel gives the 126710BLNR its instantly recognizable appearance.

Rolex Calibre 3285

Powering the Rolex GMT-Master II 126710BLNR is Rolex Calibre 3285, a self-winding mechanical movement developed specifically for the GMT-Master II. The movement provides approximately 70 hours of power reserve and includes an independent GMT function for displaying a second time zone.

The movement also features Rolex’s Parachrom hairspring and Paraflex shock absorbers. As a Rolex Superlative Chronometer, the completed watch is certified to Rolex’s stated precision standard of -2/+2 seconds per day after casing.

GMT Function and Travel

The GMT-Master II was created around the practical requirements of international travel. The additional 24-hour hand can be independently adjusted to display a second time zone, while the bidirectional bezel provides another reference for reading 24-hour time.

The Rolex GMT-Master II 126710BLNR therefore combines everyday timekeeping with a useful travel complication, making it suitable for frequent travelers, collectors and enthusiasts who appreciate Rolex’s professional watchmaking heritage.

A Modern Rolex GMT-Master II

With its 40mm Oystersteel case, black dial, blue and black Cerachrom bezel, Jubilee bracelet and Calibre 3285 movement, the Rolex GMT-Master II 126710BLNR offers a distinctive combination of functionality and contemporary Rolex design.

Its collector nickname, “Batgirl,” has become widely associated with the Jubilee-bracelet configuration, while the official Rolex reference remains 126710BLNR. For buyers looking for a modern Rolex GMT with a blue and black ceramic bezel and Jubilee bracelet, this reference is one of the defining models in the current GMT-Master II family.