Rolex Yacht‑Master 169623 Grey Dial — Key Specs Specification Detail Model Name Rolex Yacht‑Master 169623 Case Diameter ≈ 29 mm (mid‑size/lady’s model) Case Material Stainless Steel & 18 k Yellow Gold (Rolesor) Bezel 18 k Yellow Gold bidirectional rotatable bezel with raised 60‑minute graduations Dial Color Grey with luminescent hands and hour markers Crystal Scratch‑resistant sapphire crystal with Cyclops lens over date Movement Rolex Calibre 2235 automatic self‑winding Functions Hours, minutes, seconds, date at 3 o’clock Power Reserve Approx. 48 hours Bracelet Oyster bracelet (steel & 18 k yellow gold) Clasp Rolex Oysterlock folding safety clasp Water Resistance 100 m / 330 ft Certification Official Swiss Automatic, Chronometer‑grade movement (COSC level) Style Category Luxury Nautical / Sports Watch
