IWC Portugieser Chronograph Ceratanium IW371631

Features:
Chronograph function (minutes and seconds)
Small hacking seconds
Sapphire crystal with anti-reflective coating on both sides
IWC-manufactured automatic movement
Lightweight high-tech Ceratanium® case
Sport-luxury chronograph design

Specifications:
Movement Type: Automatic mechanical (Calibre 69355)
Winding: Self-winding mechanical movement
Power Reserve: Approx. 46 hours
Frequency: 28,800 vibrations per hour (4 Hz)
Water Resistance: 3 bar / 30 meters

Case:
Material: Ceratanium® (ceramic-titanium alloy)
Diameter: 41 mm
Height: 13 mm
Case Shape: Round
Crystal: Convex sapphire crystal with anti-reflective coating on both sides
Caseback: Sapphire crystal exhibition case-back

Dial:
Color: Black dial
Display: Chronograph with minutes and seconds
Additional Feature: Small seconds sub-dial
Hands: Luminous chronograph hands (standard IWC sport chronograph styling)

Strap:
Material: Black rubber strap
Strap Width: 20 mm
Buckle Width: 18 mm
Clasp: Pin buckle
System: Fixed strap system

Movement Details:
Calibre: 69355 (Manufacture movement)
Jewels: 27
Number of Components: 205
Balance Frequency: 4 Hz
Power Reserve: 46 hours
Decoration: Côtes de Genève, Perlage finishing