Perpetual calibres 2236 and 3235
Yacht-Master models are equipped with calibre 2236 (Yacht-Master 37) or calibre 3235 (Yacht-Master 40 and Yacht-Master 42), self-winding mechanical movements entirely developed and manufactured by Rolex. They offer outstanding performance, particularly in terms of precision, power reserve, convenience and reliability. Both movements’ power reserve extends to approximately 70 hours.