Opus 4

• Movement: Manually wound tourbillon, repeating on the hours, quarters and minutes on cathedral gongs. Time indications on both sides. Large moon-phase display and date. 53-hour power reserve. 18,000v/h balance frequency. Time indications on back-to-back dials with reversed hands. Case turning on the lugs. Two pushpieces to set the date and the moon.
• Functions: Front hours and minutes. Tourbillon and minute-repeater with cathedral gongs. Back hours and minutes. Large moon display and date.
• Cases: 44mm diameter in 950 platinum (18 pieces). Two unique pieces in 950 platinum set with baguette or princess-cut diamonds.
• Crystal: Sapphire-crystal glasses with anti-reflective coating.
• Faces: Front, open-work revealing the movement. Engraved gold chapter-ring. Back: hand-engraved moon disk in 18-carat white gold with painted lunar terminators and engraved gold chapter-ring.
• Strap: Hand-stitched crocodile with a bickle in 950 platinum.
• Water-resistance: 30 metres (3ATM)