Grand Seiko SBGD228
Ref. SBGD228 · In production
- Case44.5 mm
- Thick14.4 mm
- Lug-to-lug52 mm
- Water res.100 m
- MovementSpring Drive
- CrystalSapphire
Overview
The Grand Seiko SBGD228 is a sports watch from the Masterpiece collection, part of the Spring Drive 8-Day Jewelry Watch family. It has a 44.5 mm gold case, 14.4 mm thick, 52 mm from lug to lug. Inside is a spring drive movement (calibre 9R01) with 192 h of power reserve. You also get 100 m water resistance, a sapphire crystal and a bracelet.
Who it suits
- Wrists of roughly 17.9–19.8 cm (7.0–7.8 in), by our Watch Finder sizing guide
- Everyday wear including swimming
Strengths
- Sapphire crystal resists scratches
- 192 h power reserve survives a weekend off the wrist
- Spring Drive: a smooth-gliding seconds hand and high accuracy
- Rated accuracy: ±10 seconds per month (±0.5 second per day)
- Display caseback shows the movement
Trade-offs
- Thick at 14.4 mm: harder to slide under a cuff
- Long 52 mm lug-to-lug can overhang smaller wrists
Written by Watch.co from the published specs below. These are not owner reviews.
Full specifications
Case
| Case diameter | 44.5 mm | grand-seiko.com · 23 Oct 2026 |
|---|---|---|
| Thickness | 14.4 mm | grand-seiko.com · 23 Oct 2026 |
| Lug-to-lug | 52 mm | grand-seiko.com · 23 Oct 2026 |
| Case material | Gold | grand-seiko.com · 23 Oct 2026 |
| Crystal | Sapphire | grand-seiko.com · 23 Oct 2026 |
| Anti-reflective coating | Anti-reflective coating on inner surface | grand-seiko.com · 23 Oct 2026 |
| Caseback | Display (see-through) | grand-seiko.com · 23 Oct 2026 |
| Water resistance | 100 m | grand-seiko.com · 23 Oct 2026 |
| Magnetic resistance | 4,800 A/m | grand-seiko.com · 23 Oct 2026 |
Dial
| Date | No date | our classification |
|---|---|---|
| Power-reserve indicator | Yes | grand-seiko.com · 23 Oct 2026 |
Movement
| Movement type | Spring Drive | grand-seiko.com · 23 Oct 2026 |
|---|---|---|
| Calibre | 9R01 | grand-seiko.com · 23 Oct 2026 |
| Made in-house | Yes | grand-seiko.com · 23 Oct 2026 |
| Power reserve | 192 h | grand-seiko.com · 23 Oct 2026 |
| Rated accuracy | ±10 seconds per month (±0.5 second per day) | grand-seiko.com · 23 Oct 2026 |
| Hand-winding | Yes | grand-seiko.com · 23 Oct 2026 |
Strap / Bracelet
| Bracelet / strap | Bracelet | grand-seiko.com · 23 Oct 2026 |
|---|---|---|
| Lug width | 23 mm | grand-seiko.com · 23 Oct 2026 |
Other
| US list price (MSRP) | $273,000 | grand-seiko.com · 23 Oct 2026 |
|---|---|---|
| Production status | In production | grand-seiko.com · 23 Oct 2026 |
| Style (our classification) | Sports | our classification |
Specs are summarised in our own words from the brand's product page. Each row links its source and the date we checked it. Fields we haven't verified are left out rather than guessed.
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Questions about the Grand Seiko SBGD228
How big is the Grand Seiko SBGD228?
The case is 44.5 mm wide, 14.4 mm thick and 52 mm from lug to lug.
What movement does the Grand Seiko SBGD228 use?
It uses the 9R01 calibre, a spring drive movement with 192 h of power reserve.
Can I swim with the Grand Seiko SBGD228?
Yes. It is rated to 100 m.
Does the Grand Seiko SBGD228 have a date?
No, it has no date display.
How much is the Grand Seiko SBGD228?
The US list price was $273,000 on grand-seiko.com when we checked on 23 Oct 2026. Prices change, so check before you buy.
Will the Grand Seiko SBGD228 fit my wrist?
By our sizing guide it sits best on wrists of about 17.9–19.8 cm (7.0–7.8 in). Use the fit checker on this page to test your own wrist.
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