Grand Seiko SBGM245
CASE FUNCTIONS MOVEMENT Glass Material Dual-curved sapphire crystal Water resistance 20 bar Caliber no 9S66 Glass Coating Anti-reflective coating on inner surface Magnetic resistance Equipped Movement Type Automatic with manual winding Case size Diameter 40.5mm × Thickness 14.4 mm Weight 180.0 g Accuracy +5 to -3 seconds per day (mean daily rate)...