With finely engraved skeletonised nickel-finished jewelled lever movement pierced and engraved rotor repeating on two gongs one minute tourbillon carriage with mono-metallic compensation balance under the "GG" logo the white dial with luminous hands outer revolving 24 hour ring three engine-turned subsidiary dials indicating month combined with leap year subsidiary seconds combined with date and day lapis lazuli subsidiary dial for phases of the moon the thick circular case with outer revolving bezel calibrated with the names of 34 world cities gerald genta and No. 1 engraved on the band repeating mechanism activated through button at 9 square-cut sapphire three-stone bar lugs glazed display back secured by eight screws to the 18k white gold Gerald Genta double deployant clasp case dial and movement signed