Omega gents seamaster aqua terra co axial watch this classic yet robust timepiece represents a tribute to omega rich maritime heritage with the dramatic and easily recognisable dial design of the omega seamaster aqua terra 150m collectionmovement caliber omega 8500 self winding movement with co axial escapement for greater precision stability and durability resistant to magnetic fields greater than 15 000 gauss free sprung balance with silicon balance spring two barrels mounted in serie