Seiko Time Sonar Chronograph American With a silver colored bezel

With a silver colored bezel

It became so famous

The name might conjure images of a dive watch—in fact

It was a subtle transformation

This particular example was produced by Benrus

Seiko Time Sonar Chronograph American With a silver colored bezelWhy We Love It In the late 1960's and early 1970's, Seiko was experimenting with some of the first automatic chronograph movements ever made. Unlike the Swiss, who were creating their own automatic chronographs in the form of the Heuer designed Chronomatic and the Zenith El Primero, Seiko being used to producing in scale were able to keep their costs for their chronographs more accessible through mass production. Featuring a wide variety of case and