About the Patek Philippe Aquanaut The Patek Philippe Aquanaut Chronograph 5968 was introduced at BaselWorld 2018 as a new entry-level chronograph for the brand. It is powered by caliber CH 28-520 C of the Nautilus Chronograph, which is now housed in an Aquanaut case of 42.2mm. Reference 5968A-001 is stainless steel. SpecificationsBOX AND PAPERSIncludes box and papersMOVEMENTAutomaticWATER RESISTANCE12 atmCASE42 mmMATERIALSStainless SteelCase ?? MATERIALSa??a??Stainless SteelGLASSa??a??Sapphire crystalBACKEa??a??xhibitionSHAPEa??a??CushionDIAMETERa??a??42 mmSIZE Xa??a??38 mmSIZE Ya??a??38 mmHEIGHTa??a??11 mmWATER RESISTANCEa??a??12 atmBEZEL MATERIALa??a??Steel ?? Dial ?? COLORa??a??BlackINDICESa??a??ArabicHANDSa??a??Straight ?? Movement ?? BRANDa??a??Patek PhilippeCALIBERa??a??CH 28-520 CTYPEa??a??AutomaticDISPLAYa??a??AnalogDIAMETERa??a??30 mmJEWELa??a??S35RESERVEa??a??55 hFREQUENCYa??a??28800 bph ?? Strap ?? MATERIALa??a??RubberCLASP MATERIALa??a??Steel