Built with a 35.00mm stainless steel case, the IWC Portofino Chronograph IW3731-07 utilizes the caliber 631 'MecaQuartz' movement and showcases a white dial. This timepiece was offered from roughly 1988 through 1998.
Movement Type
Quartz
Caliber
631Jewels
25
Hands
Small Seconds
Shape
Round
Lug Distance
18.00 mm
Material
Stainless Steel
Glass
Sapphire
Thickness
7.80 mm
Diameter
35.00 mm
Water Resistance
30.00 m
Dial Color
White
Material
Calf
