Since 1868 Swiss watch manufacturer IWC Schaffhausen has been creating masterpieces of haute horlogerie that combine precision engineering with exclusive design. Over the years, their straightforward, no-nonsense style has appealed to adventurers far and wide—especially pilots. 

With its dashing blue dial, this Portugieser Annual Calendar watch by IWC will make a solid addition to your collection. 

Its robust offerings include an annual calendar with panoramic display at 12 where you can read the month, date, and day of the week. At 3 there is a subdial that displays this watch’s impressive 7-day power reserve, as well as Arabic numerals and a minute track. 

IWC’s caliber 52850, which beats at 28,800 vph, possesses 36 jewels, and provides hacking seconds via the small seconds subdial at 9, the proprietary movement with multiple finishes can be seen in all its glory via an exhibition case back. 

The stainless steel case measures 44.2 mm in diameter, 14.9 mm in height, and rests upon a black alligator leather strap with a stainless steel deployant buckle. Additional features include a push / pull winding crown, a water resistance to 30 m / 3 atm, and a scratch-resistant sapphire crystal. 

Standout feature(s): Impressive 7-day power reserve displayed at 3:00 o'clock; clear and legible dial design; annual calendar; exhibition case back.


Details at a glance:

• Model Reference: IW503502
• Case Material: Stainless steel
• Case Dimensions: 44.2 mm
• Case Height: 14.9 mm
• Movement: Self-winding automatic, 28,800 vph, 36 jewels, 7-day power reserve
• Caliber: IWC 52850
• Complication(s) / Feature(s): Standard time, small seconds, power-reserve indicator, day, date, month calendar
• Dial: Blue color
• Crystal: Scratch-resistant sapphire
• Winding Crown: Push / pull
• Water-resistance: 30 m / 3 atm
• Band: Black alligator leather
• Clasp: Stainless steel deployant buckle
• Country of Origin: Switzerland
• Condition: Pre-owned in mint condition; full manufacturer's service completed in December 2025
• Comments: Includes manufacturer's boxes (watch pillow is not included), instructions manual, polishing cloth, warranty card and service card