Omega Gents Constellation Chronometer Watch - 38 mm Brushed Steel Case - Black Diamond Dial - 123.10.38.21.51.001 and caliber 8520 self-winding movement with

caliber 8520 self-winding movement with chronometer and automatic winding in both directions to reduce winding time

mint green dial

green ombre´ dial

white mother-of-pearl dial

Omega Gents Constellation Chronometer Watch - 38 mm Brushed Steel Case - Black Diamond Dial - 123.10.38.21.51.001 and caliber 8520 self-winding movement with38 mm brushed stainless steel case, transparent back, domed scratch resistant sapphire crystal with anti reflective treatment both sides, black dial with diamond hour markers, self winding chronometer Omega 8500 movement with Co Axial Escapement, date, and seconds, approximately 60 hours of power reserve, stainless steel bracelet. Water resistant to 100 m.