機械式の腕時計に魅力を感じるけど、クオーツの正確性も捨てがたい――そんな人におすすめなのが、グランドセイコー（セイコーウオッチ）の「スプリングドライブ」です。独創的な機構により、ぜんまいで駆動する機械式の魅力、クオーツの精度の高さを兼ね備えていますこ ...

including the first quartz wristwatch in 1969 and the groundbreaking technology that is Spring Drive in 1999. In 2023, Seiko celebrates the 110th anniversary of its first wristwatch with the release ...

and a clasp with a push-button diver-adjusted mechanism, among others. The letters “LIMITED EDITION” and the serial number 001/500-500/500 are displayed on the case back as proof of this limited ...