Patek Philippe unveils a new era of Complications with the Ref. 5328G-001, combining traditional elegance with advanced horology. This model introduces the manually wound Caliber 31‑505 8J PS IRM CI J, offering an extraordinary eight-day power reserve and instantaneous jumping day and date displays. The textured blue dial with a black-gradient rim features applied white gold numerals filled with luminescent coating for superb legibility. A small seconds counter and power reserve indicator complete the dial’s refined symmetry. The white gold case is adorned with a signature hobnail guilloché motif along the caseband, adding Patek Philippe’s hallmark sophistication to a watch that bridges technical innovation with timeless design.

Technical Data
• Movement
– Caliber: 31‑505 8J PS IRM CI J
– Type: Manual-winding
– Functions: Hours, minutes, small seconds, instantaneous date by hand, instantaneous day in aperture, power reserve indicator
– Power reserve: 8 days (ninth reserve day marked in red)
– Escapement: Pulsomax® in Silinvar®

• Case
– Material: 18k white gold
– Bezel: Fixed, polished
– Caseband: Guilloché hobnail pattern
– Crystal: Sapphire, scratch-resistant
– Caseback: Sapphire
– Water resistance: 30 m

Dimensions
– Diameter: 41 mm
– Thickness: 10.52 mm

Strap
– Type: Calfskin leather (two straps included)
– Colors: Navy blue (fabric pattern), taupe (grained)
– Buckle: White gold patented triple-blade fold-over clasp