5990/1A-011

FLYBACK CHRONOGRAPH. TRAVEL TIME.

Sporty, refined mechanics

A rare example of a complicated Patek Philippe model in steel, this Nautilus combines three highly sought-after complications: a self-winding flyback chronograph, a second time-zone display and a date hand coupled with local time. The elegant blue dial is enlivened by a sunburst motif and a black-gradient rim.

Nautilus

5990/1A-011

1828000

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Technical characteristics

dial

Sunburst blue-gray with black-gradient rim, horizontally embossed, white gold applied baton-style hour markers with white luminescent coating.
Local time hand: white gold rounded baton-style with white luminescent coating
Home time hand: white gold skeletonized rounded baton-style, white varnished

case

Steel
Diameter (10-4 o'clock): 40.5 mm
Thickness: 12.53 mm
Water-resistant to 30m
Screw-down crown
Sapphire crystal case back

movement

CH 28-520 C FUS
Self-winding
Flyback chronograph
Central chronograph hand
60-minute counter
Two time zones: local and home time indication
Day/night indication for local and home time in apertures
Date coupled with local time by hand

Diameter: 31 mm
Thickness: 6.95 mm
Number of parts: 370
Number of jewels: 34
Power reserve: min. 45 hours – max. 55 hours
Winding rotor: 21K gold central rotor
Balance: Gyromax®
Frequency: 28,800 semi-oscillations/hour (4 Hz)
Balance spring: Spiromax®
Distinctive sign: Patek Philippe Seal

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