Classic hand-wound mechanical watch with three days of power reserve
As the saying goes, good things come in small packages. With its moderate size and box-shaped sapphire glass, SBGW305 abounds in midcentury charm and elegance. Thanks to a generous application of Zaratsu polishing, the classically styled case shines beautifully in the light. The see-through case back provides a window into the beauty of the manually wound movement within. An elegant multi-row bracelet that stands out for its meticulous craftsmanship fits comfortably on the wrist.
|Case back:||See-through case back|
|Case back with 6 screws|
|Glass Material:||Box shaped sapphire crystal|
|Glass Coating:||Anti-reflective coating on inner surface|
|Case size:||Diameter 37.3mm Lug-to-lug 44.3mm Thickness 11.7mm|
|Clasp type:||Three-fold clasp with push button release|
|The perimeter of Band:||200mm|
|Caliber no.:||9S64 Instructions|
|Movement Type:||Manual winding|
|Power reserve:||Approx. 72 hours(3 days)|
|Mean daily rate:||
+5 to -3 seconds per day
|Normal usage accuracy:||+10 to -1 seconds per day|
|Water resistance:||Splash Resistant|
|Magnetic resistance:||4,800 A/m|
|Other details / Features:||
Elegant silver-colored dial
The elegant silver-colored dial is gently rounded, and the tips of the minute and seconds hands are bent by hand to follow the contour of the dial and ensure legibility.
The manually wound movement features a maximum continuous power reserve of 72 hours (about three days). As the mainspring unwinds, its torque diminishes gradually to ensure that accuracy remains stable.
The three movements at the heart of Grand Seiko
One of the world's foremost mechanical movements, the culmination of high-precision micro-engineering and the attention to detail of Grand Seiko's expert watchmakers.
Spring Drive is a unique movement that delivers one-second-a-day precision, using just the power of a mainspring.