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File:Seiko 35A.jpg

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Summary

Description
Deutsch: Erstes Quarzarmbanduhrwerk Kal. 35A, Nr. 00234, Seiko, Japan, 1969 (Deutsches Uhrenmuseum, Inv. 2010-006)
English: First quartz wristwatch movement, used in the Seiko Astron, Caliber 35A, Nr. 00234, Seiko, Japan, 1969 (German Clock Museum, Inv. 2010-006). Essential elements included a XY-type quartz oscillator of 8,192 Hz (8,192 = 213), a hybrid integrated circuit, and a phase locked ultra-small stepping motor to turn its hands. According to Seiko, it was accurate to ±5 seconds per month or one minute per year, and its battery life was 1 year or longer.[1]
Date
Source Deutsches Uhrenmuseum
Author Museumsfoto
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  1. ↑ Seiko Quartz Astron 35SQ. Seiko Epson Corporation. Archived from the original on 2020-01-22. Retrieved on 2018-01-22.

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Date/TimeThumbnailDimensionsUserComment
current16:27, 6 December 2012Thumbnail for version as of 16:27, 6 December 2012456 × 456 (34 KB)Ras67losslessly cropped with Jpegcrop
12:42, 5 October 2011Thumbnail for version as of 12:42, 5 October 2011600 × 579 (40 KB)Onnahfarg

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