The Atelier
Guides, care tips and the history of Seiko calibres — to get to know your timepiece.
Recent articles
The Seiko 7T92 Calibre: quartz precision for the pilot’s chronograph
How the Seiko 7T92 quartz calibre works: 1/20th-of-a-second timing, 12-hour totaliser and the twin coaxial counter explained.
The Seiko 7T62 Calibre: the benchmark quartz alarm chronograph
Inside the Seiko 7T62: an electro-mechanical quartz calibre combining a 1/5th-second chronograph with a programmable analogue alarm.
The Seiko Automatic Movement: Japanese mechanical craft and the Magic Lever
The Magic Lever, the sweeping seconds hand and the legendary calibres 7S26, 4R36 and 6R35: a guide to…
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Seiko Kinetic: the watch that refused to choose between soul and precision
From the 1986 AGM prototype to the Auto Relay and Direct Drive calibres: the full story of Seiko…
The Seiko 6138 Calibre: the golden age of the automatic chronograph
The history and technical specifications of the Seiko 6138, the legendary 1970s automatic chronograph with column wheel and…
Everything about the Seiko 7S26 movement: Seiko’s “tractor”
Everything worth knowing about Seiko's famous 7S26 calibre: its origins, its technical specifications, and why enthusiasts love it.
