A flagship model that embodies the efforts of "Save the Ocean" that contributes to marine conservation by donating a part of the sales of PROSPEX. The original three-dimensional pattern and coloring express the glacier scene, which plays an important role in maintaining the marine ecosystem. The glacier formed over many years and the history of Seiko Divers are overlapped, and a deep blue dial is adopted. A pure white dial with a high quality image of the "extreme ice world spreading in the Arctic", the land of challenge of legendary adventurers.