The 43 mm Royal Oak Offshore Automatic Chronograph adopts a rubber strap, a titanium strap and a titanium bezel (model 26420TI.OO.A027CA.01). The titanium model with ceramic bezel (Ref. 26420IO.OO.A009CA.01), and the two steel models with ceramic bezel (Ref. 26420SO.OO.A600CA.01 brown dial and Ref. 26420SO.OO .A002CA.01 black dial). Finally, the rose gold model (Ref. 26420RO.OO.A002CA.01).