Patek Philippe brand

Complex Function Timepieces

Automatic mechanical movement type

Cal.CH 28-520 IRM QA 24H Movement Model

40.5 mm dial diameter

950 platinum case material

Basic Information Number 5961P-001 Brand Patek Philippe Series Complications Movement Type Automatic Mechanical Gender Men’s Movement Movement Model Cal.CH 28-520 IRM QA 24H Movement Type Automatic Mechanical Manufacturer Patek Philippe Movement Diameter 33 mm Movement Thickness 7.68 mm Balance Wheel Gyromax with Adjustment Weights Frequency 28,800 vibrations per hour Hairspring Breguet Hairspring Jewels 40 Number of Parts 456 Power Reserve 55 hours Technical Certifications Patek Philippe Seal Appearance Case Diameter: 40.5 mm Case Thickness: 13.53 mm Dial Color: Dark Blue Dial Shape: Round Strap Color: Navy Blue Clasp Type: Folding Clasp Case Back: Transparent Weight: Not available Water Resistance: 30 meters In 2024, Patek Philippe implemented a new water resistance standard; this water resistance rating refers to the depth to which the watch can be submerged. Hour marker type: Baton hour markers; Clasp spacing: Not available; Lug spacing: Not available; Materials: Case material: 950 platinum; Dial material: Matte blue dial with 8 baguette-cut diamond hour markers (approx. 0.23 carats); Bezel material: 950 platinum set with diamonds, featuring 36 baguette-cut diamonds (~3.48 carats); Crystal material: Sapphire crystal glass; Crown material: 950 platinum; Strap material: Alligator leather; Clasp material: 950 platinum set with diamonds, featuring 22 baguette-cut diamonds (~0.97 carats); Functions: Date display, Day display, Month display, Annual calendar, Chronograph, Power reserve display.