Rolex Yacht-Master II 44 mm Oystersteel — Key Specs Feature Specification Model Name Rolex Yacht-Master II Case Diameter 44 mm (Oyster case) Case Material Oystersteel (904L stainless steel) Bezel Ring Command bidirectional rotatable bezel with blue Cerachrom ceramic insert Dial Color White lacquer with Chromalight luminescent hands & markers Crystal Scratch-resistant sapphire crystal Movement Rolex Calibre 4161 automatic, self-winding Functions Hours, minutes, small seconds, programmable regatta countdown with mechanical memory and on-the-fly sync Power Reserve Approximately 72 hours Bracelet Oystersteel Oyster bracelet (three-piece links) Clasp Oysterlock folding safety clasp with Easylink 5 mm comfort extension Water Resistance 100 m / 330 ft with Triplock waterproofing system Certification Rolex Superlative Chronometer (-2/ 2 sec/day) Style Category Professional Regatta Chronograph
