The IWC Portofino reference IW4581-01, released as part of the 37mm collection, utilizes the self-winding caliber 35111. This stainless steel model is finished with a silver dial.
Movement Type
Automatic
Caliber
35111Jewels
25
Reserve
42
Frequency
28800
Hands
Center Seconds
Shape
Round
Material
Stainless Steel
Glass
Sapphire
Thickness
9.00 mm
Diameter
37.00 mm
Water Resistance
30.00 m
Dial Color
Silver
