Omega Constellation Co-Axial Master Chronometer Watch - 38 mm Steel And Yellow Gold Case - White -Silvery Dial - Brushed Steel Bracelet - 123.20.38.21.02.006 3738/100G012 Calibre Omega 8923 self-winding co-axial

Calibre Omega 8923 self-winding co-axial master chronometer movement with date and annual calendar

sweep seconds

caliber 8500 self-winding master co-axial chronometer movement with date window at 6 o'clock

approximately 60 hours of power reserve

Omega Constellation Co-Axial Master Chronometer Watch - 38 mm Steel And Yellow Gold Case - White -Silvery Dial - Brushed Steel Bracelet - 123.20.38.21.02.006 3738/100G012 Calibre Omega 8923 self-winding co-axial38 mm stainless steel and 18K yellow gold case, transparent back, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, white opaline silvery dial with silk like, caliber 8500 self winding Co Axial master chronometer movement with date function, approximately 60 hours of power reserve, brushed stainless steel bracelet with polished 18K yellow gold bars. Water resistant to 100 m (330 ft).