Seiko 6159 Diver World Timer The cushion shaped case is

The cushion shaped case is impressively thin

and the case back was monogrammed

As die-hard enthusiasts of the originals

Worn by scientists and (you guessed it) explorers into some of the more inhospitable regions on the planet

You take what's supposed to be a sturdy

Seiko 6159 Diver World Timer The cushion shaped case isThe 1960s were a pivotal time in the history of deep sea exploration, in which new technologies enabled humans to dive deeper and remain submerged longer than they ever had before. As recreational diving became more popular, the watch industry adapted to release watches that could withstand the rigors of deep sea use. Soon, Swiss watch brands such as Blancpain and Rolex released specialized dive watches, the Fifty Fathoms and the Submariner. The