Grand Seiko Mechanical SBGR317

Brand: Grand Seiko 
Reference: SBGR317
Movement: Automatic 
Caliber: 9S65
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: 40 mm 
Thickness: 13 mm 
Weight: 156 g 
Precision: +5～-3 seconds/ day 
Water-resistance: Waterproof to 100 meters / 330 feet
Remarks: Screw down crown, see-through back, screw back,