Grand Seiko SBGM221

Grand Seiko SBGM221 Specifications

Exterior

Case Material	Stainless steel
Glass Material	Box shaped sapphire crystal
Glass Coating	Anti-reflective coating on inner surface
Case size	Diameter 39.5 mm × Thickness 13.7 mm
Lug to lug	46.9 mm
Band Material	Crocodile leather
Clasp type	Three-fold clasp with push button release

 

Movement

Movement	9S66 Instructions
Driving system	Automatic with manual winding capacity
Power reserve	Approximately 72 hours (3 days)
Accuracy	+5 to -3 seconds per day (when static) / +10 to -1 seconds per day (normal usage accuracy)

 

Functions / Specifications

Water resistance	Splash resistant
Magnetic resistance	Equipped
Weight	88 g
Remarks	24-hour hand (dual time display function) 35 jewels Calendar-linked time difference adjustment function Case back with 6 screws Case back with lion emblem Date display See-through case back Stop second hand function