IW359001
Portofino Complete Calendar
Automatic winding, Diameter 41.0 mm
PRODUCT INFORMATION
- Silver plated dial
- Blue calfskin strap Strap width 20.0 mm
DELIVERY & RETURNS INFORMATION
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Contact Concierge
Our concierge service is available during the following hours
Monday to Friday: 8:00am – 6:00pm
Saturday from 8:00am – 4:00pm
Portofino Complete Calendar
The Portofino Complete Calendar is the first timepiece from IWC with the newly developed complete calendar module.
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.
- Features
- Case
- Movement
- Packaging
- Case Stainless steel Case
- Diameter 41.0 mm
- Height 11.7 mm
- Back case See-through sapphire glass back
- Water resistance 5.0 bar
- Calibre 32150 Calibre
- Movement type Automatic winding, IWC-manufactured movement
- Power Reserve 72 hours power reserve
- Frequency 28'800 VPH (4 Hz)
- Components 223 Components
- Jewels 21 Jewels
- Finishing Côtes de Genève
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