The IWC Portofino Lady Chronograph IW3730-09 utilizes a 29.00mm stainless steel and yellow gold case, a black dial, and the caliber 631 'MecaQuartz' chronograph movement.
Movement Type
Quartz
Caliber
631Jewels
25
Hands
Small Seconds
Shape
Round
Lug Distance
16.00 mm
Glass
Sapphire
Thickness
7.90 mm
Diameter
29.00 mm
Water Resistance
30.00 m
Dial Color
Black
Material
Black
Buckle
Calf