Patek Philippe Nautilus Flyback Chronograph, Travel Time

Specifications
Case
Case Size
40 mm
Case Material
Steel
Bezel
Steel
Crystal
Sapphire with Anti-reflective Treatment
Case Back
Sapphire-crystal case back
Water Resistance
30 m
Dial
Sunburst blue with black-gradient rim, horizontally embossed, gold applied hour markers with luminescent coating.
Movement
Movement
Self-winding mechanical movement. Caliber CH 28‑520 C FUS.
Power Reserve
45 - 55 hours
Strap
Steel. Patented fold-over clasp with lockable adjustment system.