The Omega Seamaster 120M ref. 21011100 has a yellow gold case, matching bracelet, and a champagne dial.
Movement Type
Automatic
Caliber
1109Jewels
21
Reserve
44
Frequency
28800
Hands
Center Seconds
Shape
Round
Lug Distance
18.00 mm
Material
Yellow Gold
Glass
Sapphire
Diameter
36.25 mm
Water Resistance
120.00 m
Dial Color
Champagne