The OMEGA Co-Axial calibre 8500 at the heart of this certified chronometer timepiece can be seen through the transparent caseback
center stone sold separately
18k white gold channel set eternity band alternating with 3 princess cut sapphires and 3 round diamonds
a precision quartz movement
2 barrels mounted in series
OMEGA Seamaster Planet Ocean 600M Co-Axial Master Chronometer Chronograph 45.5mm 215.32.46.21.01.001 Men's WAJ The OMEGA Co-Axial calibre 8500Case Diameter: 45. 5mm Watch Case: Steel Dial Color: Black Watch Resistance: 60 bar (600 metres 2000 feet) Bracelet: rubber strap Caliber Movement: OMEGA 9900 Features: Chronograph, Chronometer, Master Chronometer Certified, Transparent case back, Time zone function, Anti magnetic, Date, Small seconds, Helium escape valve, Screw in crown, Unidirectional rotating bezel