Seiko Prospex 1968 Heritage Diver’s GMT: Classic Colorways with Upgraded Specifications Editorial Seiko Prospex 1968 Heritage Diver’s GMT: Classic Colorways with Upgraded Specifications Two new releases for the 1968 Heritage Diver’s GMT introduce fresh dial treatments and spec upgrades. For collectors who know Seiko’s Diver lineage, it is a meaningful update to a classic reference. Seiko’s dive wa...