Nearly six decades after Seiko engineered a diver's watch to survive the crushing depths of the ocean, the house has returned to that original object not to replicate it, but to ask what made it timeless. Design leader Masanori Kawamura's work on the new Prospex Marinemaster 1968 Heritage Diver's Watch is a meditation on the difference between form that decorates and form that solves — and on how honestly functional design tends to outlast the era that produced it. In an age when few wearers will ever descend below the surface, the watch endures as a reminder that objects built with genuine pu