Grand Seiko Shunbun (Spring) vs Grand Seiko Hi-Beat GMT
Side-by-side dimension comparison — Ref. SBGA413 vs Ref. SBGJ237
Dimensions Compared
| Spec | Grand Seiko Shunbun (Spring) | Grand Seiko Hi-Beat GMT |
|---|---|---|
| Diameter | 40.0 mm | 40.2 mm |
| Lug-to-Lug | 47.0 mm | 47.0 mm |
| Thickness | 12.8 mm | 14.4 mm |
| Lug Width | 20 mm | 20 mm |
| Weight | N/A | N/A |
| Material | High-Intensity Titanium | Stainless Steel |
| Water Resistance | 100 m | 100 m |
| Movement | Spring Drive | Automatic (Hi-Beat 36000 GMT) |
| Power Reserve | 72 hours | 55 hours |
| MSRP | $6,300 | $7,600 |
Verdict
Both watches share a very similar 40.0 mm diameter, so they will wear nearly identically on the wrist in terms of width. The Grand Seiko Shunbun (Spring) wears thinner at 12.8 mm versus 14.4 mm, sitting closer to the wrist. At retail, the Grand Seiko Shunbun (Spring) is the more accessible option at $6,300 versus $7,600.
Where to Buy
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