Seiko Watchesのインスタグラム(seikowatchusa) - 3月14日 23時45分

#Repost @josep.kirk
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Grand Seiko SBGV025: Did you know that all GS Quartz crystals are grown in house? Not only does Grand Seiko manufacture all components for mechanical watches (such as hairspring, lubricants, bridges, gears and everything else you can think of) but also quartz crystal. #manufacture #horology

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