Calibre 59 P Girard-Perregaux base 31 jewels matte black dial with luminescent Arabic numerals and baton indexes outer minute track centre sweep seconds alarm indication on the flange aperture for the second time and date display three-part case sapphire crystal with magnified lens screw-down display back crown at 4 for the alarm function stainless steel Panerai buckle case dial and movement signed Diameter: 42 mm.