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 Ingenieur 42mm steel case

42mm steel case

Large size

30 mm white gold case

(Old Ref W6920063) (Old reference: W6920075)

lacquered black dial with polished rhodium plated appliques and hands

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 Ingenieur 42mm steel case38 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).