The ultra style watch the omega seamaster planet ocean with stainless steel case with stainless steel brushed band and deployment buckle closure self winding with co axial escapement mechanism with unidirectional rotating with ceramic insert bezel and black dial and transparent case back mens size 45mm case diameter water resistant to 600 metersmovement caliber omega 9300self winding chronograph movement with column wheel mechanism and co axial escapement for greater precision stabilit