Grand Seiko Heritage

The first 9F quartz GMT model for Heritage Collection

Caliber 9F86 is based upon, and has all the precision and durability attributes of, the original 9F but incorporates a GMT function that allows the watch's precision to be maintained when the hour hand is adjusted independently. This is made possible by new components that have been created especially for this movement. The watch allows you to move the hands without stopping the watch when setting it to local time. This achieves a convenience in which excellent accuracy of the quartz watch won't be lost.

Exterior
Case Material : Stainless steel
Glass Material : Dual-curved sapphire crystal
Glass Coating : Anti-reflective coating on inner surface
Case size : Diameter 40mm × Thickness 12.2mm
Clasp type : Three-fold clasp with push button release

Movement
Caliber no. : 9F86 Instructions
Movement Type : Quartz
Accuracy : ±10 seconds per year

Functions
Water resistance : 10 bar
Magnetic resistance : Equipped
Weight : 150.0 g
Other details / Features :
・24-hour hand (dual time display function)
・Calendar-linked time difference adjustment function
・Case back with lion emblem
・Date display
・Screw case back