The IWC Portugieser Yacht Club Chronograph (ref. IW390503) features the IWC-manufactured Caliber 89361 mechanical automatic movement with an approximate 68-hour power reserve when fully wound; slate gray dial; flyback chronograph function with hour and minute counters combined in a totaliser at 12 o'clock; date aperture at 3 o'clock; small seconds subdial at 6 o'clock; sapphire-crystal, transparent case back; and 43.5mm, stainless steel case on a black rubber strap with a stainless steel deployant clasp.

Brand: IWC
Series: Portugieser Yacht Club Chronograph 43.5mm
Model #: iw390503
Retail: $12,700.00
Size: Mens
Case Diameter: 43.5mm
Case Thickness: 14.5mm
Movement: Automatic
Case Material: Stainless Steel
Dial Color: Grey
Bracelet/Strap: Rubber Black
Clasp Type: Deployant Buckle
Bezel: Fixed
Crystal: Scratch Resistant Sapphire
Case Back: Transparent
Screw Down Crown: Yes
Water Resistant 60m/180ft