Bulova 1968 Oceanographer
Believe this to be a 1968 Oceanographer Model "H" variant. Never seen another with the blue face. Pristine condition, no rust, and I can probably set my quartz watches by it. Solid.
Back of case says "Waterproof, Stainless Steel Case, Anti Magnetic, Shock Resistant, M8". Movement also has M8 date stamp.
I have the original stainless steel mesh band as well, also in great shape, but it makes the watch a bit heavy to wear, and I wear this one daily.