Why it matters: it set the blueprint for every Seiko dive watch after.

Seiko is commemorating the 20th anniversary of its state-of-the-art Spring Drive technology with the release of an extraordinary collection blending Japanese precision with avant-garde design. The ...

Inspired by Seiko's 1970s "Time Sonar" series (which famously had semi-transparent amber or brown dials), it has a translucent dial through which you can see the day and date wheels. But, in HUF's ...