Grand Seiko Heritage

Exterior
Case Material : Stainless steel
Glass Material : Dual-curved sapphire crystal
Glass Coating : Anti-reflective coating on inner surface
Case size : Diameter 40mm Lug-to-lug 46.2mm Thickness 14mm
Clasp type : Three-fold clasp with push button release

Movement
Calibre no. : 9S86 Instructions
Movement Type : Automatic with manual winding
Power reserve : Approx. 55 hours
Mean daily rate : +5 to -3 seconds per day
Normal usage accuracy : +8 to -1 seconds per day

Functions
Water resistance : 10 bar
Magnetic resistance : 4,800 A/m
Other details / Features :
・24-hour hand (dual time display function)
・37 jewels
・Calendar-linked time difference adjustment function
・Case back with lion emblem
・Date display
・LIMITED EDITION on the case back
・Screw case back
・Screw-down crown
・See-through case back
・Serial number engraved on the case back
・Stop seconds hand function