Specification Details Model Name Rolex Yacht‑Master 40 mm Case Diameter 40 mm (closest authentic size) Case Material Oystersteel & Platinum (Rolesium) or Oystersteel & Everose gold depending on ref. Bezel Bidirectional rotatable 60‑minute graduated bezel (platinum or Everose gold) Dial Color Black or dark dial with Chromalight luminescent markers/hands for enhanced legibility Crystal Scratch‑resistant sapphire with Cyclops date magnifier Movement Rolex Calibre 3235 automatic, self‑winding Functions Hours, minutes, seconds, date at 3 o’clock Power Reserve Approx. 70 hours Bracelet Oyster bracelet with solid links Clasp Oysterlock folding safety clasp with Easylink 5 mm comfort extension Water Resistance 100 m / 330 ft Certification Superlative Chronometer (‑2/ 2 sec/day) Style Category Luxury nautical / sports watch
