The IWC IW3910-30 Portofino Chronograph arrived in 2019 as a substitute for the IW3910-10, featuring a black dial and a stainless steel case.
Movement Type
Automatic Chronograph
Caliber
75320Jewels
25
Reserve
44
Frequency
28800
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
Material
Milanese
