Overview
The SBGA413, nicknamed “Cherry Blossom” or “Shunbun,” features a pinkly shimmering “sakura” dial inspired by Japan’s spring season. Part of the “Four Seasons” U.S. Exclusive collection, it combines a titanium case with an automatic Spring Drive movement.
Product Image

Image copyright Grand Seiko
Official Description
The dial of the SBGA413 is textured to evoke wind-blown cherry blossoms—“Sakura” in Japanese—celebrating the fleeting beauty of spring. The “Shunbun” combines the celebrated Spring Drive movement’s high precision and smooth seconds hand with high-intensity, lightweight titanium construction.
Product Specifications
| Feature | Value |
|---|---|
| Model Number | SBGA413 |
| Series | Heritage “Four Seasons” Collection |
| Case Material | High-intensity titanium |
| Case Diameter | 40.0 mm |
| Case Thickness | 12.8 mm |
| Lug Width | 20 mm |
| Lug-to-Lug | 47.0 mm |
| Crystal | Dual-curved sapphire, AR coated |
| Bracelet/Strap | Titanium bracelet |
| Water Resistance | 100 meters (10 bar) |
| Magnetic Resistance | 4,800 A/m |
| Weight | 100g |
| Clasp | Three-fold clasp with push button |
| Caseback | Sapphire crystal, see-through |
Movement Details
| Specification | Value |
|---|---|
| Movement | Spring Drive, Caliber 9R65 |
| Type | Automatic with manual winding |
| Power Reserve | ~72 hours (3 days) |
| Accuracy | ±1 second per day / ±15 sec per month |
| Jewels | 30 |
| Features | Date, Power reserve indicator |
Frequently Asked Questions
Is the SBGA413 lightweight?
Yes, the high-intensity titanium case and bracelet make it significantly lighter than comparable steel watches.
Where is this watch made?
Handcrafted in Japan at the Shinshu Studio.
Is it exclusive?
SBGA413 is part of a “Four Seasons” series originally for the US market, now available more broadly.
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