A Long-selling Simple Standard Spring Drive Model
A Spring Drive standard model that has had a strong following ever since its release. It was the first Grand Seiko watch to be powered by a Spring Drive, the third movement mechanism, combining the motive force of a mainspring found in mechanical watches with the high precision of a quartz watch.
The watch features a sweeping hand movement, a unique mechanism that differs from mechanical and quartz movement.
It has a maximum 72-hour (3-day) power reserve, and a power reserve indicator on the bottom left of the dial showing the amount in reserve.
The differing expressions offered by the silver watch face and multi-faceted hand needle and index, which change depending on the level of light, help to make this a long-time favorite.
Wearers of this watch can enjoy a clear view of the movement through the see-through case back.
Case : Stainless steel Case back: Stainless steel and sapphire crystal Glass : High definition dual-curved sapphire crystal Coating : Anti-reflection coating on inner surface Lumi Brite : - Case size : Diameter 41.0mm×Thickness 12.5mm
Movement : Caliber 9R65 Driving system : Spring Drive Power reserve : Approximately 72 hours Accuracy : ±1 per day (±15 seconds per month)
Clasp : Three-fold clasp with push button release Water resistance : 10 bar Magnetic resistance : 4800 A/m (60 gauss) Weight : 150.0 g Remarks : ・Screw down crown
・Power reserve display function
The movement at the heart of Grand Seiko
Combining cutting-edge technology and time-tested craftsmanship as one of the world's true watch manufactures
Capturing and refining the very essence of a watch
A legacy of innovation beginning with the first Grand Seiko in 1960