Overview
The SBGJ201 “Mt. Iwate” (nicknamed “Peacock” for certain versions) is a staple in the Grand Seiko Hi-Beat GMT lineup. With an intricate sunray dial inspired by the ridged slopes of Mt. Iwate, and a fast-beat true GMT movement, it’s beloved by world travelers and horology fans alike.
Product Image
Image copyright Grand Seiko
Official Description
The “Mt. Iwate” dial showcases bold, delicate sunray patterning, reminiscent of the mountain visible from the Grand Seiko Studio. SBGJ201 is powered by the 9S86 Hi-Beat GMT movement, with true traveler functionality and a high level of finishing.
Product Specifications
| Feature | Value |
|---|---|
| Model Number | SBGJ201 |
| Series | Heritage Collection |
| Case Material | Stainless steel |
| Case Diameter | 40.0 mm |
| Case Thickness | 14.0 mm |
| Lug Width | 20 mm |
| Lug-to-Lug | 46.2 mm |
| Crystal | Box-shaped sapphire, AR coated |
| Bracelet/Strap | Stainless steel bracelet |
| Water Resistance | 100 meters (10 bar) |
| Magnetic Resistance | 4,800 A/m |
| Weight | 157g |
| Clasp | Three-fold clasp with push button |
| Caseback | Sapphire crystal, see-through |
Movement Details
| Specification | Value |
|---|---|
| Movement | Hi-Beat 36000 GMT, Caliber 9S86 |
| Type | Automatic with manual winding |
| Power Reserve | ~55 hours |
| Accuracy | +5 to -3 seconds per day |
| Jewels | 37 |
| Features | True GMT, independently set local hour |
Frequently Asked Questions
Is this a “true” GMT?
Yes. The local hour hand is independently adjustable, with the 24-hour hand tracking home (ideal for travel).
What sets the “Mt. Iwate” apart?
The deeply ridged dial, representing Mt. Iwate’s surface, and the in-house Hi-Beat true GMT movement.
Is it available on a strap?
Standard version comes with a steel bracelet but strap versions and limited editions exist.
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