Seiko SRE020
Ref. SRE020 · In production · Seiko label: Women's
- Case30.3 mm
- Thick10.9 mm
- Lug-to-lug37 mm
- Water res.50 m
- MovementAutomatic
- CrystalHardlex (mineral)
Overview
The Seiko SRE020 is a dress watch from the Presage collection, part of the Seiko Presage family. It has a 30.3 mm stainless steel case, 10.9 mm thick, 37 mm from lug to lug. Inside is a automatic movement (calibre 2R05) with 40 h of power reserve. You also get 50 m water resistance, a hardlex (mineral) crystal and a cow leather strap.
Who it suits
- Wrists of roughly 12.4–13.7 cm (4.9–5.4 in), by our Watch Finder sizing guide
- Desk and dress wear (keep it away from swimming)
- Shirt cuffs and smarter dress codes
Strengths
- Slim at 10.9 mm
- Compact 37 mm lug-to-lug suits smaller wrists
- Hacks and hand-winds, so it is easy to set
Trade-offs
- Hardlex (mineral) crystal scratches more easily than sapphire
- Only 50 m water resistance: splash-proof, not for swimming
- 40 h power reserve: it stops after about a day and a half off the wrist
Written by Watch.co from the published specs below. These are not owner reviews.
Full specifications
Case
| Case diameter | 30.3 mm | seikowatches.com · 23 Oct 2026 |
|---|---|---|
| Thickness | 10.9 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 | Hardlex (mineral) | 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 |
Movement
| Movement type | Automatic | seikowatches.com · 23 Oct 2026 |
|---|---|---|
| Calibre | 2R05 | seikowatches.com · 23 Oct 2026 |
| Made in-house | Yes | seikowatches.com · 23 Oct 2026 |
| Power reserve | 40 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 | 14 mm | seikowatches.com · 23 Oct 2026 |
Other
| US list price (MSRP) | $625 | 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 SRE020
How big is the Seiko SRE020?
The case is 30.3 mm wide, 10.9 mm thick and 37 mm from lug to lug.
What movement does the Seiko SRE020 use?
It uses the 2R05 calibre, a automatic movement with 40 h of power reserve.
Can I swim with the Seiko SRE020?
Not really. It is rated to 50 m.
How much is the Seiko SRE020?
The US list price was $625 on seikowatches.com when we checked on 23 Oct 2026. Prices change, so check before you buy.
Will the Seiko SRE020 fit my wrist?
By our sizing guide it sits best on wrists of about 12.4–13.7 cm (4.9–5.4 in). Use the fit checker on this page to test your own wrist.
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