Collection: Seiko Prospex Turtle

Seiko first introduced the 6309 in 1977 to add to its existing line of divers watch. With its cushion case that resembled a turtle, this watch was fairly popular with diving enthusiasts who favored its reliability and rugged construction. In 2016, Seiko reintroduced the new and bigger versions of the famous cushion-cased 6306/9 diver's watches that were made from the mid-1970s to mid-1980s.