Grand Seiko
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GRAND SEIKO SBGR309
Specifications
- Case
Case Stainless steel Case back: Stainless steel and sapphire crystal Glass High definition dual-curved sapphire crystal Coating Anti-reflection coating on inner surface Case size Diameter 42.0 mm × Thickness 13.1 mm The perimeter of bracelet 205.0 mm Band Stainless steel - Movement
Movement Caliber 9S68 Instructions Driving system Automatic Power reserve Approximately 72 hours Accuracy +5 to -3 seconds per day (when static) Note: This accuracy is the result of measuring the loss/gain of the time for seventeen days before the inside movements of the watch are put in the case. The measurement has been done in the factory where temperatures or position of the movements are controlled. When the watch is actually worn, the accuracy should be from -1 second/day to +10 seconds/day (-1 second/day to +8 seconds/day for Cal.9S85, 9S86). - Functions/Specifications
Clasp Three-fold clasp with push button release Water resistance 10 bar Magnetic resistance 4800 A/m (60 gauss) Weight 173.0 g Remarks Caseback with a lion emblem Screw back See-through back Jewels: 35
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GRAND SEIKO SBGA211
Specifications
- Case
Case High-intensity titanium Case back: High-intensity titanium and sapphire crystal Glass High definition dual-curved sapphire crystal Coating Anti-reflection coating on inner surface Case size Diameter 41 mm × Thickness 12.5 mm Lug to lug 49 mm The perimeter of band 193 mm Band High-intensity titanium - Movement
Movement Caliber 9R65 Instructions Driving system Spring Drive Power reserve Approximately 72 hours Accuracy ±1 seconds per day (±15 seconds per month) - Functions/Specifications
Clasp Three-fold clasp with push button release Water resistance 10 bar Magnetic resistance 4800 A/m (60 gauss) Weight 100.0 g Remarks Screw down crown Screw back See-through back Anti-metal allergy Jewels: 30 Power reserve display function