Seiko

Seiko SQ: History, Models & Quartz Technology
Discover Seiko SQ quartz history and the differences between 1970s–1990s Seiko SQ watches, illustrated with five original vintage examples.
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Seiko Caliber 7N35: Complete Quartz Movement Guide
The Seiko Caliber 7N35 is an analogue quartz movement best understood through three questions: what its factory documentation actually promises, how its date and battery indicators are meant to wor...
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Seiko Caliber 7S26: Complete Movement Guide
The Seiko caliber 7S26 is a mechanical automatic movement with central seconds, date and day. It was fitted to many Seiko 5 watches and other Seiko models from the late 1990s onward, and its calend...
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