18K rose gold (750/1000) ardillon buckle
63ct blue sapphires set in 18k white gold
the moon phase offers a horological complication
with triple safety folding clasp and push-piece opening mechanism
the Master Control Calendar offers a complete calendar
Tank Must watch Something Blue 18K rose gold (750/1000) ardillonTank Must watch, extra large model, mechanical movement with automatic winding, caliber. Steel case, beaded crown set with a synthetic cabochon shaped spinel, silvered flinqu dial, blued steel sword shaped hands, steel bracelet, calendar aperture at 6 o'clock. Case dimensions: 41 mm x 31 mm, thickness: 8. 4 mm. Water resistant up to 3 bar (approx. 30 meters 100 feet).