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Grand Seiko Black Ceramic Limited Edition 9R96 Spring Drive Sports Chronograph GMT SBGC015 Watch Review | News | Jura Watches
Grand Seiko Black Ceramic Limited Editions - SBGC015, SBGC017, SBGE037 and SBGE039 | WatchUSeek Watch Forums
Seiko - Grand Seiko Black Ceramic Limited Edition : New Spring Drive movement The movement, Spring Drive Chronograph GMT, is specially adjusted to deliver an even higher level of precision, ±10 seconds
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