Patek Philippe Nautilus Flyback Chronograph Travel Time 40.5mm | 5990/1A-011

Case:
Stainless steel.
Screw-down crown.
Sapphire crystal case back.
Diameter (10 - 4 o’clock): 40.5 mm.
Thickness: 12.53 mm.
Water-resistant to 120 meters.

Dial:
Sunburst blue with black-gradient rim.
Horizontally embossed.
Gold-applied hour markers with luminescent coating.

Movement:
Self-winding mechanical movement.
Calibre CH 28‑520 C FUS.
Flyback chronograph.
Central chronograph hand.
60-minute counter.
Two time zones: local and home time indication.
Day/night indication for local time and home time in apertures.
Date coupled with local time by hand.
Diameter: 31 mm.
Height: 6.95 mm.
370 components.
34 jewels.
Power reserve: min. 45 hours - max. 55 hours.
Winding rotor: 21K gold central rotor.
Balance: Gyromax®.
Frequency: 28,800 semi-oscillations per hour (4 Hz).
Balance spring: Spiromax®.
Hallmark: Patek Philippe Seal.

Bracelet:
Stainless steel.
Patented fold-over clasp with lockable adjustment system.