Grand Seikoさんのインスタグラム写真 - (Grand SeikoInstagram)「The 20th anniversary of Spring Drive is celebrated in a new series within the Grand Seiko Elegance collection that presents an even more refined and slim profile. There are four watches in the series, featuring two new manual-winding Spring Drive calibers both of which have the signature glide motion seconds hand, reflecting the natural and continuous flow of time. All offer one-second-a-day precision and a long power reserve, thanks to the dual mainspring design of both calibers, and share the understated refinement and sparkle of quality that exemplify Grand Seiko's uniquely Japanese sensibility continuous flow of time. #baselworld #baselworld2019 #grandseiko #gs #watch #elegancecollection #9r02 #9r31 #springdrive」3月22日 1時13分