Reference 131.63.41.21.01.001 of the Omega Constellation features a 41.00mm yellow gold case topped with a ceramic bezel. It is powered by the self-winding caliber 8901 movement.
Movement Type
Manual
Caliber
89-01Jewels
70
Reserve
72
Frequency
21600
Hands
Small Seconds
Shape
Round
Glass
Sapphire
Diameter
41.00 mm
Water Resistance
50.00 m
Dial Color
Black
Material
Black