Certina has always enjoyed getting to the bottom of things – not just in terms of precision and durability, but also where ocean research is concerned. In its latest creation, the Swiss watch brand is reviving a historical model that is just as current today as it ever was. The DS PH200M represents a seamless continuation of its predecessor's timeless design, combining it with a high-performance automatic movement of the latest generation. In the 1960s and 1970s, Certina demonstrated the robustness of its own timepieces in a series of high-profile research projects and expeditions. These journeys not only took the watches to dizzying heights, but also brought them down to the bottom of the sea. This experience inspired the brand to develop a new timepiece dedicated to life under the sea – the DS PH200M. In 2018, Certina showcases the new edition of this classic. Its stainless steel case with a diameter of 42.8 mm is fitted with a black unidirectional graduated bezel. It surrounds a black dial that contrasts perfectly with the Super-LumiNova-coated hands and indices, even in darkness. Turning the watch over, one is greeted with the relief of a turtle, Certina's brand symbol. The supple black/grey NATO fabric strap with a pin buckle and the brown calfskin leather strap for formal use put the final touches to the model. Its similarities with the original are more than superficial; like its predecessor, the new DS PH200M draws on the original DS Concept of the 1960s. Unlike modern Certina watches, this timepiece features a rounded hesalite box glass with anti-reflective coating on one face and a scratch-resistant NEX Scratchguard coating along with a separate mounting ring that ensure double security and water resistance up to 20 bar. When it comes to the mechanical timepiece's precision and operational performance, however, Certina has opted for a modern approach. An innovative Powermatic 80 movement ensures accuracy and an 80-hour power reserve. Thus the new version of the old DS PH 200 m is a nod to the past while looking decisively to the future.