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Portofino Automatic Moon Phase

Automatic winding, Diameter 40.0 mm

Silver, Stainless steel Case

PRODUCT INFORMATION

  • Silver dial
  • Dark brown alligator leather strap Strap width 20.0 mm

DELIVERY & RETURNS INFORMATION

Delivery options depend on your shipping address. Our Ambassadors from the Concierge Service will be able to advise you accordingly. Free delivery and return

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Portofino Automatic Moon Phase

The Portofino Automatic Moon Phase is the first Portofino timepiece with a case diameter of 40 millimetres that features a moon phase display.

Moon phase display | IWC Schaffhausen

The difficulty in displaying the moon phase on the dial of a watch comes from the fact that the moon does not follow a daily rhythm in its orbit around the Earth. A cycle from new moon to new moon – one lunation – does not last 30 days, but exactly 29 days, 12 hours, 44 minutes, and 2.88 seconds. Therefore, a period of 30 days must be slowed down to come as close as possible to one lunar cycle. This is achieved by placing a reduction gear between the day star and the moon phase disc. The key to high precision lies in the number of wheels used, their proportions and the number of teeth they have. IWC’s moon phase displays are calculated to the highest precision and accuracy.

'Case'
  • Features
  • Case
  • Movement
  • Packaging
  • Central hacking seconds
  • Sapphire glass, convex, antireflective coating on both sides
  • Moon phase display
  • Case Stainless steel Case
  • Diameter 40.0 mm
  • Height 11.1 mm
  • Water resistance 3.0 bar
  • Calibre 35800 Calibre
  • Movement type Automatic winding
  • Power Reserve Indicator 50 hours
  • Frequency 28'800 VPH (4 Hz)
  • Jewels 25

Contact Concierge

Do you have a question about a product, your order or our service? Contact us via phone, email, or through our Whatsapp service.

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