In a first for planet ocean, a single block of black ceramic forms the case body of each watch. At the heart of all four “deep black” watches is the omega master chronometer calibre 8906. The movement has been tested at the industry's highest level, passing all 8 tests set by the swiss federal institute of metrology (metas). On the blue and red versions, rubber has been blended with ceramic to create unique bezels which highlight the first 15 minutes.