The new Grand Seiko 200m Diver SLGA015 is inspired by the Black Stream —Kuroshio Current. The Kuroshio Current also known as the Black or Japan Current —Nihon Kairyū— flows northwards past Japan towards the North Pacific and is one of the largest ocean streams in the world. The dynamic and sometimes violent tides caused by the Black Stream inspire the deep black color and richly textured surface of the dial of this new 200m diver’s watch.