The IWC Portofino Chronograph reference 3783, manufactured between 2007 and 2010, is powered by the self-winding caliber 79320 and comes in either a stainless steel or rare white gold case. The IW3783-03 variant is distinguished by its stainless steel case and black dial.
Movement Type
Automatic Chronograph
Caliber
79320Jewels
31
Reserve
44
Frequency
28800
Hands
Small Seconds
Shape
Round
Lug Distance
20.00 mm
Material
Stainless Steel
Glass
Sapphire
Thickness
13.50 mm
Diameter
41.00 mm
Water Resistance
30.00 m
Dial Color
Black
