You can look forward to this little ritual all week long: winding your Portofino by hand to provide the timepiece with energy for the next eight days.

Overview
Reference: IW510107
Dial Color: Silver plated
Case: 18 ct 5N gold
Strap: Dark brown alligator leather strap by Santoni View all compatible straps
Diameter: 45 mm
Movement: Manual-winding, IWC-manufactured movement

Features
Small hacking seconds
Date display
Sapphire glass, arched-edge, antireflective coating on both sides
Power reserve display
Indexless balance with four golden weight screws on the balance rim
8 days power reserve

Case
Strap width: 22 mm
Buckle width: 18 mm
Case: 18 ct 5N gold
Diameter: 45 mm
Height: 11.7 mm
Water Resistance: 3 Bar
Back case: With synthetic sapphire crystal

Movement
Caliber: 59210
Movement type: Manual-winding
IWC-manufactured movement: Yes
Power Reserve: 192 hours
Frequency: 28800 Vph (4 Hz)
Components: 215
Jewels: 30
Decoration: Côtes de Genève, Perlage, Polished