Grand Seiko Masterpiece

The 9R Spring Drive 8Days is driven by a Spring Drive, and the first Grand Seiko to be produced by the specialists in high quality watches at the Micro Artist Studio in Seiko's facility in Shiojiri, near Nagano. It contains the new caliber 9R01 Spring Drive with an eight-day power reserve.

Exterior
Case Material : Platinum
Glass Material : Box shaped sapphire crystal
Glass Coating : Anti-reflective coating on inner surface
Case size : Diameter 43mm × Thickness 13.2mm
Band Material : Crocodile leather
The perimeter of Band : 195mm
Clasp type : Three-fold clasp with push button release

Movement
Caliber no. : 9R01 Instructions
Accuracy : ±0.5 second per day (±10 seconds per month)

Functions
Water resistance : 10 bar
Magnetic resistance : Equipped
Weight : 168.0 g
Other details / Features :
・56 jewels
・Power reserve display
・Screw case back
・See-through case back
・Stop seconds hand function
・Time difference adjustment function