Patek Philippe 5204

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The Reference 5204 Grand Complication wristwatch

is the ﬁrst Patek Philippe split-seconds chronograph

with a perpetual calendar featuring a movement

developed and crafted in its entirety in the manu-

facture’s ateliers. The classic architecture of the

manually wound caliber CHR 29-535 PS Q movement

incorporates a horizontal clutch and two column

wheels. It is endowed with numerous technical

advances and the basic caliber alone features six

patented innovations. The split-seconds mechanism

was largely redesigned and optimized with two

decisive reﬁnements: a new isolator system for

the split-seconds lever and a patented mechanism

that assure the nearly perfect congruence of the

chronograph and split-seconds hands. Many further

innovations boost its rate accuracy, performance,

and long-term reliability. Despite its 182 parts, the

perpetual calendar module has a height of merely

1.65 mm, demonstrating the peerless competence

of Patek Philippe in the domain of grand compli-

cations and exceptional timepieces.

Reference 5204

Caliber CHR 29-535 PS Q

Split-seconds chronograph

with perpetual calendar.

Patek Philippe 5204 - Page 3