Patek Philippe 5370 User manual

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Reference 5370

Caliber CHR 29-535 PS

Manually wound

split-seconds chronograph.

Within the broad repertoire of complications

that Patek Philippe masters so consummately, the

split-seconds chronograph occupies an important

position. Its ingenious function allows lap and

intermediate times to be stopped without inter-

rupting an ongoing measurement. The ﬁrst Patek

Philippe chronograph for the wrist, launched in

1923, already had the rattrapante feature.

As a successor to this exceptional line, the Ref.

5370 grand complication wristwatch sports a

newly developed split-seconds mechanism with

technical-masculine charisma, crowned by a

black dial in genuine enamel.

A movement for the future

Aptly expressing Patek Philippe’s philosophy, the

manufacture caliber CHR 29-535 PS melds tradi-

tion with innovation. The manually wound watch

with column-wheel control and wheel clutch fea-

tures all of the key hallmarks of the classic caliber

architecture but with many patented technical

innovations is decidedly rooted in the 21st cen-

tury. It ranks among the most progressive move-

ments of its kind. The optimized chronograph

mechanism is paired with innovations for the

split-seconds function, including the isolator for

the rattrapante hand lever that disconnects the

split-seconds wheel from the chronograph wheel

as soon as a lap time is stopped. This prevents un-

necessary friction and eliminates any degradation

of the amplitude of the balance. The rattrapante

lever with the ruby roller between two ﬂat con-

tact shoulders assures that the chronograph and

split-seconds hands are perfectly congruent when

superposed.

Peerless ﬁnissage

As all Patek Philippe movements, this caliber

stands out with lavish decorations that can be

admired through the display back. Most steel parts

are round-chamfered, their upper sides straight-

grained, and the rattrapante clamps superbly

polished. Gleaming and matt surfaces alternate,

accentuated with gold-ﬁlled engravings and spar-

kling ruby-red jewels. These ﬁnishing touches re-

ﬂect the pinnacle of watchmaking artistry and

are mandated by the Patek Philippe Seal, deemed

the strictest set of quality directives in the watch

industry. It also speciﬁes the rate accuracy with a

maximum deviation of +2 to -3 seconds per day.

Custom-cased in platinum

The stunning looks of the meticulously crafted

Ref. 5370 are absolutely on par with its impres-

sive inner life. The platinum case is graced with

subtle rounds and cambers in balanced propor-

tions, two oval chronograph pushers at 2 and 4

o’clock, and, between them, an elegant turban-

style crown with an integrated split-seconds but-

ton. The same attention to detail was devoted to

the gently curved strap lugs with the decorative

cabochons that adorn their ends. Created with ar-

tisanal techniques rooted in a grand tradition, the

genuine enamel dial stands out with an intensely

rich black and excellent legibility.

Chronograph start/stop pusher

Winding crown

Position 1: to wind the watch

Position 2: to set the time

Subsidiary seconds

Chronograph hand Split-seconds pusher

30-minute counter

1 2

Split-seconds hand

Instructions

WINDING CROWN

The winding crown is used to wind the watch

(position 1) and to set the time (position 2)

MANUALLY WOUND

Your watch has a manually wound movement.

When fully wound, it has a power reserve of at

least 55 hours. We recommend that you wind

your watch each day at about the same time,

preferably in the morning (about 25 clockwise

turns of the crown).

Caution: Please wind the watch before you put it on. This

way, you can avoid lateral pressure on the winding stem

which in the course of the years could damage the stem

tube. Turn the crown gently and uniformly and stop as soon

as you feel resistance; if you wind the watch too vigorously,

this might damage the movement.

SETTING THE TIME

To set the time, pull the crown out, and turn it

in either direction. Once the correct time is set,

press the crown home again. The movement has a

stop-seconds mechanism (balance wheel blocker)

that allows the watch to be synchronized with

a time signal to an accuracy of one second. The

seconds hand stops when the winding crown is

pulled. It starts running again as soon as you push

the crown home again.

Caution: Please set the time before you put the watch

on. This prevents lateral pressure on the winding stem. We

recommend that you turn the crown only with two ﬁngers

and use your ﬁngernails to pull it out.

Tachymeter scale Chronograph reset pusher

SPLIT-SECONDS CHRONOGRAPH

The two seconds hands are started and stopped

by consecutively pressing the button at 2 o’clock.

To read a lap time without stopping the chro-

nograph, press the button in the crown (split-

seconds button); this will stop the split-seconds

hand only. When you press the split-seconds

button anew, the split-seconds hand will swiftly

catch up with the chronograph hand again. Re-

peat the process to obtain further lap time read-

ings. We advise against running the chronograph

permanently; this could cause premature wear of

the mechanism.

NORMAL USE

Actuate the button at 2 o’clock: This simultane-

ously starts the chronograph and split-seconds

hands.

Actuate the button in the crown: This stops the

split-seconds hand.

Actuate the button in the crown again: the split-

seconds hand catches up with the chronograph

hand.

Actuate the button at 2 o’clock: This stops the

chronograph.

Actuate the button at 4 o’clock to set the super-

imposed chronograph and ﬂy-back hands to zero

(reset).

Caution: Do not reset before the chronograph and split-

seconds hands are superposed. Otherwise, the split-seconds

hand will remain at its last lap time position.

CALIBER: CHR 29-535 PS, MANUALLY WOUND

DIAMETER: 29.60 MM

HEIGHT: 7.10 MM

NUMBER OF PARTS: 312

NUMBER OF JEWELS: 34

POWER RESERVE: WITH THE CHRONOGRAPH DISENGAGED:

65 HOURS MIN.

BALANCE: GYROMAX®

FREQUENCY: 28,800 SEMI-OSCILLATIONS/HOUR (4 HZ)

BALANCE SPRING: BREGUET

HALLMARK: PATEK PHILIPPE SEAL

Movement technical data

Care and Maintenance

WATER RESISTANCE

Your watch is ﬁtted with different types of seals

to protect the movement against the ingress of

dust and moisture and to prevent damage if it

is immersed in water. However, if your watch

receives a blow to the crown or the crystal, its

water resistance may be impaired.

SERVICE

We recommend that you have your watch ser-

viced every ﬁve years. The best way to do this is to

bring your watch to an Authorized Patek Philippe

Retailer who will be happy to forward it to our

workshops for you. You can then be assured that

your watch will be inspected and overhauled by

a qualiﬁed master watchmaker at Patek Philippe

headquarters in Geneva.

The watchmaker will completely disassemble the

movement and then inspect, clean, and lubri-

cate all the individual parts prior to reassembly.

All functions of the watch will also be tested in

detail and the escapement regulated if necessary.

Finally, its rate accuracy will be monitored and

precision-adjusted for a further period of two

weeks. The entire process may take several weeks

because each watch must undergo a complete

series of tests to fulﬁll the strict quality criteria

of Patek Philippe.

If you have any questions regarding the maintenance of

your watch, contact the Authorized Patek Philippe Retailer

nearest you or our International Customer Service depart-

ment in Geneva, or visit www.patek.com.

CHANGING THE CASE BACK

Your watch comes with a sapphire-crystal case

back as well as with an interchangeable solid-

metal back. Only our watchmakers at the Patek

Philippe workshops in Geneva are authorized to

replace this back.

PATEK PHILIPPE SEAL

The Patek Philippe Seal applies to the entire

watch, including the movement, case, dial, hands,

pushers, strap, and clasp as well as to all other

facets that contribute to the precision and aes-

thetic perfection of the timepiece. It covers the

technical, functional, and aesthetic factors, but

also rate accuracy, dependability, and customer

service quality. Additionally, it reﬂects the mak-

er’s know-how and all other assets needed for the

development, production, and long-term main-

tenance of an extraordinary timekeeping instru-

ment.

Français

Référence 5370

Calibre CHR 29-535 PS

Chronographe à rattrapante

à remontage manuel.

Dans la vaste palette de complications dont Patek

Philippe s’est faite le virtuose, le chronographe à

rattrapante a toujours joué un rôle de choix. Cette

fonction ultrasophistiquée permettant de mesu-

rer des temps intermédiaires sans interrompre le

chronométrage global apparaît notamment sur le

tout premier chronographe-bracelet de la manu-

facture genevoise, lancé en 1923.

Héritière de cette lignée d’exception, la montre-

bracelet à grande complication référence 5370

marie un mécanisme de rattrapante réinventé à

un design technique et masculin rehaussé par un

cadran en émail véritable noir.

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