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Seiko

Seiko SQ 7545-7030 from 1979, silver analog dial with SQ emblem and date, shown on its original steel bracelet

Seiko SQ: History, Models & Quartz Technology

Seiko SQ 7545-7030 from 1979, silver analog dial with SQ emblem and date, shown on its original steel bracelet
1970s

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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1992 Seiko Scuba 200M 7N35-6020 with dark blue dial, gold-tone markers, two-tone bezel and matching bracelet
1970s

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 S-Wave 7S26-0120 with blue dial, white Arabic numerals and cushion-shaped steel case
1990s

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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