Prospex Coastline

The Seiko Prospex Coastline diver is notable for its new 6R55 '3-day' movement, a compact 41.3 x 12.5 mm case, and a distinctive polygonal bezel design. It offers contemporary sizing with a bold, architectural aesthetic, setting it apart from standard round dive watches. With a hard-coated case and 300m ISO rating, it provides solid tool-watch credentials.