Seiko SPB538
Ref. SPB538 · In production
- Case35 mm
- Thick12.3 mm
- Lug-to-lug37 mm
- Water res.50 m
- MovementAutomatic
- CrystalSapphire
Overview
The Seiko SPB538 is a dress watch from the Presage collection, part of the Classic Series family. It has a 35 mm stainless steel case, 12.3 mm thick, 37 mm from lug to lug. Inside is a automatic movement (calibre 6R51) with 72 h of power reserve. You also get 50 m water resistance, a sapphire crystal and a cow leather strap.
Who it suits
- Wrists of roughly 13.8–15.7 cm (5.4–6.2 in), by our Watch Finder sizing guide
- Desk and dress wear (keep it away from swimming)
- Shirt cuffs and smarter dress codes
Strengths
- Sapphire crystal resists scratches
- 72 h power reserve survives a weekend off the wrist
- Compact 37 mm lug-to-lug suits smaller wrists
- Hacks and hand-winds, so it is easy to set
- Light at 60 g
Trade-offs
- Only 50 m water resistance: splash-proof, not for swimming
Written by Watch.co from the published specs below. These are not owner reviews.
Full specifications
Case
| Case diameter | 35 mm | seikowatches.com · 23 Oct 2026 |
|---|---|---|
| Thickness | 12.3 mm | seikowatches.com · 23 Oct 2026 |
| Lug-to-lug | 37 mm | seikowatches.com · 23 Oct 2026 |
| Case material | Stainless steel | seikowatches.com · 23 Oct 2026 |
| Crystal | Sapphire | seikowatches.com · 23 Oct 2026 |
| Anti-reflective coating | Anti-reflective coating on inner surface | seikowatches.com · 23 Oct 2026 |
| Caseback | Screw | seikowatches.com · 23 Oct 2026 |
| Water resistance | 50 m | seikowatches.com · 23 Oct 2026 |
| Magnetic resistance | 4,800 A/m | seikowatches.com · 23 Oct 2026 |
| Weight | 60 g | seikowatches.com · 23 Oct 2026 |
Movement
| Movement type | Automatic | seikowatches.com · 23 Oct 2026 |
|---|---|---|
| Calibre | 6R51 | seikowatches.com · 23 Oct 2026 |
| Made in-house | Yes | seikowatches.com · 23 Oct 2026 |
| Power reserve | 72 h | seikowatches.com · 23 Oct 2026 |
| Hacking seconds | Yes | seikowatches.com · 23 Oct 2026 |
| Hand-winding | Yes | seikowatches.com · 23 Oct 2026 |
Strap / Bracelet
| Bracelet / strap | Cow leather | seikowatches.com · 23 Oct 2026 |
|---|---|---|
| Lug width | 11 mm | seikowatches.com · 23 Oct 2026 |
Other
| US list price (MSRP) | $1,900 | seikowatches.com · 23 Oct 2026 |
|---|---|---|
| Production status | In production | seikowatches.com · 23 Oct 2026 |
| Style (our classification) | Dress | 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 Seiko SPB538
How big is the Seiko SPB538?
The case is 35 mm wide, 12.3 mm thick and 37 mm from lug to lug.
What movement does the Seiko SPB538 use?
It uses the 6R51 calibre, a automatic movement with 72 h of power reserve.
Can I swim with the Seiko SPB538?
Not really. It is rated to 50 m.
How much is the Seiko SPB538?
The US list price was $1,900 on seikowatches.com when we checked on 23 Oct 2026. Prices change, so check before you buy.
Will the Seiko SPB538 fit my wrist?
By our sizing guide it sits best on wrists of about 13.8–15.7 cm (5.4–6.2 in). Use the fit checker on this page to test your own wrist.
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