This beautiful timepiece is referred to as the oyster perpetual Yacht-Master 40 in 18kt everose gold with an oysteflex bracelet.  It features a black dial and a bidirectional rotatable 60-minute graduated bezel with matt black cerachrom insert in ceramic, polished raised numerals and graduations. The waterproof and robust qualities of this model make it an exceptional watch for water sports or to simply enjoy looking at it every time you need to tell time.
 
Reference # 126655.