Originally introduced in 1998, the Portugieser Chronograph fuses classical proportions and refined minimalism with the functionality of a chronograph. The IW371626 version features a 41.0 mm 18 ct white-gold case, a thin bezel, and slender pushers, giving it a wide-dials appearance and a balanced wrist presence. The “Horizon Blue” dial — with its vertically arranged recessed totalisers (30-minute counter at 12 o’clock, small seconds at 6 o’clock) and quarter-second flange scale — offers excellent readability and an elegant, airy dial architecture.

The movement is the IWC-manufactured calibre 69355, a column-wheel chronograph calibre with automatic winding and a 46-hour power reserve. A sapphire crystal front and display caseback reveal the finely decorated movement, while a light-blue calfskin strap by Santoni with a matching white-gold pin buckle completes the ensemble. Water resistance to 3 bar confirms its suitability for everyday wear (in formal or casual settings) rather than heavy sport.

Technical Details

Case – 18 ct white-gold case, polished and brushed finishing

Diameter – 41.0 mm

Height – 13.1 mm

Dial – Horizon Blue dial with vertically arranged recessed chronograph sub-dials and quarter-second scale on flange

Caseback – See-through sapphire glass caseback (display back)

Crown – Standard crown with chronograph pushers

Water Resistance – 3 bar (30 metres)

Calibre – IWC calibre 69355 (manufacture in-house)

Movement Type – Automatic winding with column-wheel chronograph

Power Reserve – 46 hours

Frequency – 28,800 VPH (4 Hz)

Jewels – 27 jewels

Features – Hours, minutes, small seconds; Chronograph (central chronograph seconds + 30-minute counter); Precision quarter-second scale; Sapphire crystal front and back with antireflective coating; Classic feuille hands and applied numerals

Strap – Light-blue calfskin strap by Santoni with white-gold pin buckle