Portuguese Sidérale Scafusia
Portuguese Yacht Club Chronograph "Ocean Racer"
Portuguese Yacht Club Chronograph
Portuguese Perpetual Calendar
Portuguese Perpetual Calendar
The IWC-manufactured 89361 calibre displays stopped times up to 12 hours in a subdial where they can be read off as simply as the time of day. The arched-edge front glass and the railway-track-style chapter ring give the design a classic balance. Available in 18-carat red gold or stainless steel with an alligator leather Santoni strap.
The arched-edge front glass of the Portuguese Chronograph Classic gives the watch the balanced appearance of a classic timepiece
Available in 18-carat red gold or stainless steel, both with a choice of silver- or slate-coloured dials
The dial with the classic railway track-style chapter ring that once set the tone for the original Portuguese
The sapphire glass back cover provides a view of the IWC-manufactured 89361 calibre and the rotor decorated with Geneva stripes
You could call this chronograph in the Portuguese family the big brother of the Reference 3714. The model is slightly larger in diameter and 2 millimetres higher, although the latter makes little difference optically because of the arched-edge front glass. This traditional type of glass gives the design a classic balance that is enhanced by the railway-track-style chapter ring, which also gave the original Portuguese its distinctive appearance. The Portuguese Chronograph Classic is equipped with the IWC-manufactured 89361 calibre. The movement was developed specially to show stopped times up to 12 hours on a separate subdial, which can be read off like the time of day. The Reference 3904 is available in 18-carat red gold or stainless steel with either a silver-plated or slate-coloured dial. The rotor, decorated with Geneva stripes, can be seen through the transparent sapphire-glass back. All models are supplied with a Santoni strap made of alligator leather.
Designed and manufactured completely by IWC in Schaffhausen, the 89360-calibre chronograph movement and its successor, the 89361, feature a significantly improved self-winding system and set new watchmaking standards. The design, which occupied an IWC development team for a full 4 years, was necessitated by a revolutionary chronograph display that enables the user to read off even relatively long periods of stopped times – 8 hours and 52 minutes, for example – at a glance: a circular totalizer combines the hour and minute hands as if they were a watch-within-a-watch. In 2012, it was joined by the newly developed 89365 chronograph movement including a stopwatch function with minutes and seconds as well as a flyback function. After further development, the IWC-manufactured movement was known as the 89800 calibre and used for the big digital date and month displays in References 3761 and 3791. The new Ingenieur Perpetual Calendar Digital Date-Month comes equipped with a further development on the theme, the 89802 calibre.
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Given regular servicing, a quality timepiece will go on working reliably and precisely for many, many years.