Cal. 4030 nickel-finished lever movement 31 jewels the blue sodalite dial with applied diamond-set numerals three subsidiary dials indicating constant seconds 30 minutes and 12 hours registers in tonneau-shaped water-resistant-type case with sapphire-set bezel diamond-set graduated hooded lugs screw back and screw down crown two screw down chronograph buttons in the band 18K white gold Rolex deployant clasp case dial and movement signed