The self-winding Minute Repeater Reference 5178 is adorned with refined Rare Handcrafts showcased on the flinqué blue Grand Feu enamel dial. The white gold dial plate is finely hand-guilloched with a swirling pattern, before being coated with translucent enamel. The two "cathedral" gongs, twice as long as their traditional counterparts, give the minute-repeater a particularly rich and deep sound. The novelty is accompanied by two interchangeable straps – one in shiny peacock blue alligator leather; the other in shiny orange alligator leather, both secured by a white gold fold-over clasp.

Hand-guilloched swirling pattern beneath Grand Feu blue transparent enamel (flinqué enamel), gold applied Breguet numerals. 18K gold dial plate. White gold. Diameter: 40 mm. Height: 10.53 mm. Humidity- and dust-protected only (not water resistant). Interchangeable solid and sapphire crystal case backs. Alligator leather with square scales, hand-stitched, shiny peacock blue (originally fitted). Alligator leather with square scales, hand-stitched, shiny orange (additional strap). Fold-over clasp. Minute repeater. Chime with two “cathedral” gongs activated by a slide piece in the case. Minute repeater with chime on two “cathedral” gongs. Small seconds.

Minute repeater. Diameter: 28 mm. Thickness: 5.05 mm. Number of parts: 342. Bridges: 10. Jewels: 39. Power reserve: min. 43 hours - max. 48 hours. 22K gold off-center mini-rotor. Balance: Gyromax^®. Vibrations/hour: 21 600 (3 Hz). Balance spring: Spiromax^®. Hallmark: Patek Philippe Seal.