Grand Seiko's signature Mt. Iwate dial comes to life in a lush, effervescent green, which perfectly complements the watch's namesake Tōgè, meaning 'mountain pass,' symbolizes a navigable route through a mountain range, subtly evoking the imagery of a spirited drive over the numerous ridges of Mt. Iwate in Northern Japan.

A gold-tone GMT hand contrasts beautifully against the verdant dial, resulting in a highly legible design that allows for easy tracking of two distinct time zones via a 24-hour ring. The case—with its comfortable curved design, box sapphire crystal, and tapering lugs—calls back to the very first Grand Seiko watch from 1960.

Powering the watch is Caliber 9S66, which features automatic winding, GMT functionality, 72 hours of power reserve, and accuracy of +5/-3 seconds a day.

Exterior

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

Movement

• Caliber no. : 9S66 Instructions
• Movement Type : Automatic with manual winding capacity
• Power reserve : Approx. 72 hours(3 days)
• Accuracy : +5 to -3 seconds per day (when static) / +10 to -1 seconds per day (normal usage accuracy)

Functions

• Water resistance : 30 meters
• Magnetic resistance : Equipped
• Weight : 88.0 g
• Other details / Features :
• 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 seconds hand function