Grand Seiko Heritage

This model incorporates Caliber 9S86, the high-specification movement delivers the same accuracy (-5 to +3 seconds a day) and the same power reserve (55 hours) as the core Caliber 9S85, while also offering the GMT function that the international traveler needs to ensure that the accuracy of the time shown is not compromised when the time zone is changed. The GMT hand shows the time in the home time zone.

Exterior
Case Material : High-intensity titanium
Glass Material : Dual-curved sapphire crystal
Glass Coating : Anti-reflective coating on inner surface
Case size : Diameter 40mm × Thickness 14mm
The perimeter of Band : 203mm
Clasp type : Three-fold clasp with push button release

Movement
Caliber no. : 9S86 Instructions
Movement Type : Automatic with manual winding
Power reserve : Approx. 55 hours
Accuracy : +5 to -3 seconds per day (when static) / +8 to -1 seconds per day (normal usage accuracy)

Functions
Water resistance : 10 bar
Magnetic resistance : Equipped
Weight : 107.0 g
Other details / Features :
・24-hour hand (dual time display function)
・37 jewels
・Against an allergic reaction to metal
・Calendar-linked time difference adjustment function
・Case back with lion emblem
・Date display
・Screw case back
・Screw-down crown
・See-through case back
・Stop second hand function