Grand Seiko Spring drive SBGA203

Brand: Grand Seiko 
Reference: SBGA203
Movement: Spring drive 
Caliber: 9R65
Dial Color: Black
Glass Material: Dual curve sapphire glass with anti-reflective coating 
Case material: Stainless steel
Bracelet/Strap: Stainless steel
Back: See-through, Screw back
Case Diameter: 41.0 mm 
Thickness: 12.5 mm 
Weight: 150 g
Precision: ±15 seconds/ month 
Water-resistance: Waterproof to 100 meters / 330 feet
Remarks: Screw down crown, Power reserve display, 72 hours power reserve,