Omega Constellation Co-Axial Master Chronometer Watch - 27 mm Steel Case - White -Silvery Dial - 127.10.27.20.02.001 IW358304 beaded crown set with a

beaded crown set with a synthetic cabochon-shaped spinal

and sweep second hand

1mm steel case

shiny navy blue alligator strap with square scales

Omega Constellation Co-Axial Master Chronometer Watch - 27 mm Steel Case - White -Silvery Dial - 127.10.27.20.02.001 IW358304 beaded crown set with a27 mm stainless steel case, transparent back, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, white opaline silvery dial with silk like pattern, red gold index markers, and red gold hands, caliber 8700 self winding Co Axial master chronometer movement with date function, approximately 50 hours of power reserve, brushed stainless steel bracelet with polished stainless steel bars. Water resistant to 100 m (330 ft).