🔹 Overview
The RL GMT-Master II 40 mm Ref. M126710GRNR-0003 is a modern traveler’s watch that blends refined aesthetics with exceptional functionality. Crafted in Oystersteel, it features a striking black and grey Cerachrom ceramic bezel insert with engraved numerals, paired with a sleek black dial for optimum legibility. Designed to track multiple time zones simultaneously, this GMT-Master II is powered by RL’s cutting-edge Calibre 3285, ensuring precision, reliability, and robustness for those constantly on the move.

💎 Key Specifications
Origin: Switzerland — part of RL’s iconic Oyster Perpetual GMT-Master II line
Gender: Men’s / Unisex
Case Diameter: 40 mm Oyster case in corrosion-resistant Oystersteel
Case Material: Oystersteel with polished lugs and brushed case sides
Bezel: Bidirectional rotatable 24-hour graduated bezel with two-color black and grey Cerachrom insert in ceramic; numerals and graduations coated in platinum via PVD process
Dial: Black lacquer dial with Chromalight display, offering long-lasting blue luminescence
Hour Markers: Large applied markers in 18 ct white gold, filled with Chromalight
Bracelet Type: Jubilee bracelet in Oystersteel, five-piece links with Oysterlock safety clasp and 5 mm Easylink comfort extension
Glass: Scratch-resistant sapphire crystal with Cyclops lens over the date window at 3 o’clock
Water Resistance: Waterproof to 100 m / 330 ft, Triplock triple waterproofness system

⏱️ Movement
Type: Perpetual, mechanical, self-winding with GMT functionality
Caliber: RL Calibre 3285 with Chronergy escapement, Parachrom hairspring, and Paraflex shock absorbers
Certification: Superlative Chronometer, −2/+2 sec/day after casing
Power Reserve: Approximately 70 hours
Frequency: 28,800 vph (4 Hz)
Jewels: 31
Functions: Hours, minutes, seconds; 24-hour hand for second time zone; independently adjustable local hour hand; instantaneous date with rapid setting; stop-seconds for precise time setting

✅ Conclusion
The RL GMT-Master II Ref. M126710GRNR-0003 offers contemporary style and professional-grade travel functionality. Its black and grey ceramic bezel is understated yet distinctive, while the Jubilee bracelet ensures day-long comfort. With the high-performance Calibre 3285, this watch delivers 70 hours of power reserve, enhanced resistance to shocks and magnetism, and precision within ±2 seconds per day. Whether crossing continents or navigating daily schedules, it’s a perfect fusion of RL’s technical mastery and modern elegance.