Seiko "Silverwave" Vintage J12082Model: Seiko Silverwave J12082 Year: 1960 Features: The Build. Is the J12082 Seikos first dive watch? Depends who you ask. Modern watch enthusiast will likely scoff at the idea of a dive watch only having 50m of water resistance. Equally, Seiko aficionados will almost certainly tell you the 62MAS is Seikos first dive watch and they wouldnt be wrong. With 150m of water resistance, the 62MAS is certainly Seikos first professional dive watch. The Era. In