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Patek Philippe Annual Calendar Chronograph 5905P

This new 5905P adds a fresh set of hands with a new dial encased in an in-house made solid platinum housing.

At 42mm wide the Annual Calendar Chronograph is among Patek Philippe’s larger timepieces – which for 2015 was joined by the similarly sized Calatrava Pilot Travel Time 5524. 


Inside this Patek Philippe 5905P watch is the in-house made and designed caliber CH 28-520 QA 24H automatic movement.


As a thoroughly modern Patek Philippe movement, it operates at 4Hz with a power reserve of about 50 hours, and intelligently displays the calendar information at the top of the dial with distinct and legible windows for the day of the week, date, and month.


Above 6 o’clock on the dial is a subdial, used for the chronograph complication and offering a 60 minute counter. Delving deeper into the technical and this chronograph mechanism, enthusiasts will appreciate that this movement includes both a column wheel transmission as well as a vertical clutch. 


The colour blue seems to be a hot hue in the high-end watch industry currently, and this Patek Philippe 5905P emphasises why blue is a very attractive and sensible colour for a luxury watch. Paired with platinum, the colour cuts a flattering figure on the Annual Calendar Chronograph 5905P – the metallic blue dial is eminently legible and, upon closer inspection one will notice attractive new dauphine-style hands. 


An additional design trick can be found in the placement of a semi-hidden diamond on the case exterior, set in the platinum between the lugs under 6 o’clock.



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