OMEGA Speedmaster Calibre 321

The Speedmaster Calibre 321, reference 311.50.39.30.01.001, houses a manually wound Omega calibre 321 chronograph movement in a 38.6 mm rose gold case measuring 14 mm thick. The white gold bezel and black dial are paired with a rose gold bracelet and a sapphire crystal, while the tachymeter scale and small seconds subdial complete the chronograph layout. A screw-down crown supports water resistance to 60 metres, and this reference is issued as a limited edition.