Case : Stainless steel
Glass : Sapphire crystal
Coating : Anti-reflection coating on inner surface
Lumi Brite : Hands and markers
Case size : Diameter 44.2mm×Thickness 14.0mm
The perimeter of bracelet : 195.0mm
Band : Stainless steel


Movement : Caliber 9R65    Instructions
Driving system : Spring Drive
Power reserve : Approximately 72 hours
Accuracy : ±1 seconds per day (±15 seconds per month)


Clasp : Three-fold clasp with push button release
Water resistance : Water resistance for air diving 200m
Magnetic resistance : 4800 A/m (60 gauss)
Weight : 201.0 g
Remarks : Screw down crown
Screw back
Jewels: 30
Power reserve display function
The unidirectional rotating bezel
Caseback with a lion emblem
The unidirectional rotating bezel

Grand Seiko SBGA229 [ 9R Spring Drive ]