IWC Watch Portugieser Eternal Calendar IW505701.
The IWC Eternal Calendar watch from the Portugieser collection takes into account the Gregorian calendar and the complex leap year exceptions, skipping three years over a four hundred year period. The reference IW505701, made from platinum, measures a 44mm diameter and is topped with sapphire crystal glass to protect its silver perpetual calendar dial, complete with day, date, month, leap year and moon phase indicator. The latter is accurate to 45 million years, representing one of IWC Schaffhausen’s biggest horological feats in its entire history.
Honouring the perpetual calendar complication designed by Kurt Klaus back in 1985, this IWC Portugieser Eternal Calendar watch houses ingenious mechanics, the Calibre 52640, which offers a 168 hour power reserve. The reference IW505701 also features a Pellaton Winding system, a black alligator leather strap, and a glass dial crafted via an innovative and highly complex process. To achieve the dial, the underside of the glass is frosted. Then, the sub dials are machined and polished separately. This Portugieser Eternal Calendar by IWC is topped with a double box sapphire glass, promising you the clearest view into one of the company’s most compelling timepieces to date.
Special Features:
- Men’s 44mm IWC Portugieser Eternal Calendar watch reference IW505701
- Highly complex perpetual calendar mechanism with 4 million year accuracy for its moon phase
- Day, date, month, year and moonphase functions
- Silver dial with central hands and Arabic numeral hour markers
- Black alligator leather strap with platinum folding clasp
- Glass dial under a double box sapphire crystal glass front
- Powered by the in house Calibre 52640
- One of the brand’s most impressive horological marvels in its entire history
- 50 meter way resistance
- Sapphire crystal glass caseback
- Guarantee of 8 years on all IWC Schaffhausen watches
- Jura Watches is an official, authorised stockist of genuine IWC Schaffhausen Watches
