The Rolex GMT-Master II 126710GRNR — quickly nicknamed the "Bruce Wayne" for its dark, restrained palette — is the gray-and-black Cerachrom bezel GMT-Master II that arrived in the Rolex catalog in 2024, and this 2025 example dates to the second year of production. Among Rolex's growing portfolio of two-color Cerachrom bezels, the GRNR carries a uniquely monochromatic identity: graphite gray on the daylight 6-to-18-hour half of the 24-hour scale, jet black on the nighttime 18-to-6 half, with no contrasting color accent on the bezel itself. The result is the stealthiest GMT-Master II Rolex has ever produced and an instant collector's piece. Housed in a 40mm Oystersteel Oyster case on the matching Oyster bracelet with the Oysterlock safety clasp and Easylink 5mm comfort extension, the 126710GRNR carries a glossy lacquered black dial with applied 18k white gold hour markers, Mercedes hands with long-duration Chromalight luminescence, and the central 24-hour GMT hand in green — the single shot of color that breaks the monochrome. The date appears at 3 o'clock under the cyclops lens. Powered by the in-house Rolex Caliber 3285 automatic movement with the patented Chronergy escapement, paramagnetic Parachrom hairspring, Paraflex shock absorbers, and a 70-hour power reserve, the 126710GRNR carries Superlative Chronometer certification to -2/+2 seconds per day. Pre-owned, 2025 production.