Grand Seiko USAさんのイラストまとめ
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The official Twitter account of Grand Seiko USA. Follow here for news about the latest releases from the storied Japanese luxury timepiece manufacturer.
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Japan Seasons models #SBGJ249 and #SBGJ251 are powered by Caliber 9S86, a high frequency movement that maintains a 55-hour power reserve while running at a beat rate of 36,000 bph. The Hi-Beat GMT movement delivers an accuracy rate of +5/-3 seconds a day. https://t.co/6h7qY4aTgz
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