5990/1A-011 – Nautilus

The Ref. 5990/1A-001 Nautilus Travel Time chronograph is one of Patek Philippe’s rare steel watches.

Equipped with the CH 28-520 C FUS self-winding movement, it combines three convenient and practical complications: flyback chronograph, travel time (dual time zone, including two independent hour hands, of which the skeleton hour hand indicates the home time) and the local time. Time-synchronized analog date display (at 12 o’clock).

wrist watch
Self-winding mechanical movement. Caliber CH 28‑520 C FUS. Flyback timing function. Central chronograph hand. 60 minute cumulative timer. Dual time zone device: local and home time display. Windowed local and home time day/night display. The analog date display is synchronized with local time.

Dial
40.5 mm stainless steel case, sapphire-crystal back, black gradated dial with luminescent coated gold applied numerals

Case
Stainless steel version. Screw-down crown. Sapphire crystal case back. The waterproof coefficient is 120 meters.

Case diameter (10 o’clock to 4 o’clock): 40.5 mm. Thickness: 12.53mm.

Strap
Stainless steel. Patented folding clasp with lockable adjustment.