The Rolex GMT-Master II reference 126710BLNR, known to collectors worldwide as the Batman for its blue-and-black Cerachrom bezel insert, is the watch that brought one of the most coveted modern Rolex configurations to the next-generation Caliber 3285 platform. Released in 2019 on the Jubilee bracelet and re-issued in 2021 on the classic Oyster bracelet under the same reference number, the 126710BLNR succeeded the long-running 116710BLNR and brought a power reserve increase to 70 hours along with refined case proportions. The 40mm Oystersteel case is paired with the bidirectional rotatable 24-hour bezel in two-tone blue-and-black Cerachrom ceramic, a manufacturing feat Rolex spent years perfecting before its 2013 debut on the original Batman. The matte black dial carries large Chromalight applied indices, Mercedes hands, and the independent green 24-hour GMT hand that lets the wearer track a second time zone via the bezel. Powered by the in-house Rolex Caliber 3285 with paramagnetic blue Parachrom hairspring, Chronergy escapement, Paraflex shock absorbers, and Superlative Chronometer certification. Water-resistant to 100 meters and worn on the iconic Oyster bracelet with Oysterlock safety clasp and Easylink extension. Pre-owned in excellent condition. Affirm financing available at checkout.