Seamaster
41 mm brushed and polished grade 5 titanium case, transparent back, screw-in crown, unidirectional rotating...
41 mm brushed and polished 18K Sedna gold case, transparent back, screw-in crown, unidirectional rotating...
41 mm brushed and polished stainless steel case, transparent back, screw-in crown, unidirectional rotating bezel...