Grand Seiko SBGJ237
Ref. SBGJ237 · In production
- Case44.2 mm
- Thick14.4 mm
- Lug-to-lug50.6 mm
- Water res.200 m
- MovementAutomatic
- CrystalSapphire
Overview
The Grand Seiko SBGJ237 is a gmt watch from the Sport collection. It has a 44.2 mm stainless steel case, 14.4 mm thick, 50.6 mm from lug to lug. Inside is a automatic movement (calibre 9S86) with 55 h of power reserve. You also get 200 m water resistance, a sapphire crystal and a bracelet.
Who it suits
- Wrists of roughly 17.7–19.7 cm (7.0–7.7 in), by our Watch Finder sizing guide
- Swimming, snorkelling and diving
- Frequent travellers who track two time zones
Strengths
- Sapphire crystal resists scratches
- 200 m water resistance
- Screw-down crown helps keep water out
Trade-offs
- Thick at 14.4 mm: harder to slide under a cuff
- Long 50.6 mm lug-to-lug can overhang smaller wrists
- Heavy at 188 g
Written by Watch.co from the published specs below. These are not owner reviews.
Full specifications
Case
| Case diameter | 44.2 mm | grand-seiko.com · 23 Oct 2026 |
|---|---|---|
| Thickness | 14.4 mm | grand-seiko.com · 23 Oct 2026 |
| Lug-to-lug | 50.6 mm | grand-seiko.com · 23 Oct 2026 |
| Case material | Stainless steel | 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 | Screw | grand-seiko.com · 23 Oct 2026 |
| Bezel | Rotating | grand-seiko.com · 23 Oct 2026 |
| Water resistance | 200 m | grand-seiko.com · 23 Oct 2026 |
| Screw-down crown | Yes | grand-seiko.com · 23 Oct 2026 |
| Magnetic resistance | 4,800 A/m | grand-seiko.com · 23 Oct 2026 |
| Weight | 188 g | grand-seiko.com · 23 Oct 2026 |
Dial
| Luminous material | LumiBrite | grand-seiko.com · 23 Oct 2026 |
|---|---|---|
| Date | Date | our classification |
| GMT / second time zone | Yes | grand-seiko.com · 23 Oct 2026 |
Movement
| Movement type | Automatic | grand-seiko.com · 23 Oct 2026 |
|---|---|---|
| Calibre | 9S86 | grand-seiko.com · 23 Oct 2026 |
| Made in-house | Yes | grand-seiko.com · 23 Oct 2026 |
| Power reserve | 55 h | 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 | 21 mm | grand-seiko.com · 23 Oct 2026 |
Other
| US list price (MSRP) | $7,600 | grand-seiko.com · 23 Oct 2026 |
|---|---|---|
| Production status | In production | grand-seiko.com · 23 Oct 2026 |
| Style (our classification) | GMT | 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 SBGJ237
How big is the Grand Seiko SBGJ237?
The case is 44.2 mm wide, 14.4 mm thick and 50.6 mm from lug to lug.
What movement does the Grand Seiko SBGJ237 use?
It uses the 9S86 calibre, a automatic movement with 55 h of power reserve.
Can I swim with the Grand Seiko SBGJ237?
Yes. It is rated to 200 m.
Does the Grand Seiko SBGJ237 have a date?
Yes, it shows the date.
How much is the Grand Seiko SBGJ237?
The US list price was $7,600 on grand-seiko.com when we checked on 23 Oct 2026. Prices change, so check before you buy.
Will the Grand Seiko SBGJ237 fit my wrist?
By our sizing guide it sits best on wrists of about 17.7–19.7 cm (7.0–7.7 in). Use the fit checker on this page to test your own wrist.
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