The digital perpetual calendar is one of the outstanding technological advances made by the Schaffhausen based watchmaking company. With the new Portugieser Perpetual Calendar Digital Date-Month Edition “75th Anniversary” (Ref. 3972), the Portugieser watch family now includes a model featuring a digital display for the date and month.
The perpetual calendar can be set easily using the crown. It will not require correction until 2100, a year that breaks with the conventional 4-year cycle and will not be a leap year.
Model: Portugieser Perpetual Calendar Digital Date-Month Edition “75th Anniversary”
Ref. IW397201 •IW397202 •IW397203
Limited edition of 25 watches in platinum and 75 watches for each of the two red gold references
Large, double-digit displays for the day and month
Leap year display
Stopwatch function with hours, minutes and seconds
Hour and minute counters combined in a totalizer at 12 o’clock
Small hacking seconds
IWC-manufactured calibre 89801, Mechanical chronograph movement
Frequency: 28,800 A/h / 4 Hz
Power reserve : 68 h
Rotor made of 18-carat red gold
Case, dial and strap
Ref. IW397201: case in platinum, silver-plated dial, black alligator leather strap by Santoni, folding clasp in platinum
Ref. IW397202: case in 18-carat red gold, black dial, dark brown alligator leather strap by Santoni, folding clasp in 18-carat red gold
Ref. IW397203: case in 18-carat red gold, silver-plated dial, dark brown alligator leather strap by Santoni, folding clasp in 18-carat red gold
Glass: sapphire, arched edge, antireflective coating on both sides
Water-resistant: 3 bar
Diameter: 45 mm
Case height: 16.5 mm
See through sapphire glass back
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