Byōka, beauty of the end of summer on the dial
Powered by the slim, hand-wound movement, Calibre 9S64, this watch is the epitome of simple refinement. The dial is simple and clean but, when viewed through the sapphire case back, the intricate perfection of the engineering of the hand-assembled and adjusted movement is abundantly and
satisfyingly clear. Thanks to a long mainspring and a balance both made of proprietary metals, this watch has a high and stable accuracy rate and a power reserve of 72 hours.
The dial is deep green in colour and is inspired by Byōka, which marks the transition from summer to autumn. The first morning dew appears and the wind feels cool against the skin. It is still the end of August but summer is short in Shizukuishi and the early signs of autumn are in the air. The green of the leaves on the trees is increasingly deep and, with its delicately textured surface, the dial reflects its own special beauty.
|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|
|Band Material:||Crocodile leather|
|Caliber no.:||9S64 Instructions|
|Movement Type:||Manual winding|
|Power reserve:||Approx. 72 hours(3 days)|
|Mean daily rate:||
+5 to -3 seconds per day
|Water resistance:||Splash Resistant|
|Magnetic resistance:||4,800 A/m|
|Other details / Features:||
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 Seiko's expert watchmakers.
Spring Drive is a unique movement that delivers one-second-a-day precision, using just the power of a mainspring.