OMEGA's exclusive Seamaster Planet Ocean "Deep Black" collection offers some of the most innovative Swiss watches on the market, consisting of five highly sophisticated models which combine GMT functionality with traditional divers watch features. <p> For the first time in the Seamaster Planet Ocean collection, the watch cases have been fashioned from a single block of black ceramic. On the black and 18K Sedna™ gold models, the ceramic dials and cases have been polished to a high gloss finish. The red and blue versions, on the other hand, are brushed with a matte effect offering improved readability under water. <p> Along with the helium escape valves, the unidirectional bezels are also in black ceramic, and on some models, use rubber to cover the first 15 minutes of the dive scale. <p> All sized at 45.5mm and water‑resistant to 600 metres, there is also an orange chronograph model available. Like all choices in the collection, it is driven by an automatic Co‑Axial Master Chronometer movement. These timepieces are presented on black rubber straps or black leather straps lined with rubber.