The IWC Portofino Chronograph reference IW3910-02 is built with a 42.00mm stainless steel case containing the self-winding caliber 79230 and includes a black dial.
Movement Type
Automatic Chronograph
Caliber
79230Jewels
29
Reserve
44
Frequency
21600
Hands
Small Seconds
Shape
Round
Material
Stainless Steel
Glass
Sapphire
Thickness
13.50 mm
Diameter
42.00 mm
Water Resistance
30.00 m
Dial Color
Black
