Seiko SRE003
Ref. SRE003 · In production · Seiko label: Women's
- Case28 mm
- Thick11.2 mm
- Lug-to-lug33.1 mm
- Water res.100 m
- MovementAutomatic
- CrystalHardlex (mineral)
Overview
The Seiko SRE003 is a sports watch from the Seiko 5 Sports collection, part of the SKX series family. It has a 28 mm stainless steel case, 11.2 mm thick, 33.1 mm from lug to lug. Inside is a automatic movement (calibre 2R06) with 40 h of power reserve. You also get 100 m water resistance and a hardlex (mineral) crystal.
Who it suits
- Wrists of roughly 11.1–12.8 cm (4.4–5.0 in), by our Watch Finder sizing guide
- Everyday wear including swimming
Strengths
- Compact 33.1 mm lug-to-lug suits smaller wrists
- Hacks and hand-winds, so it is easy to set
- Light at 69 g
Trade-offs
- Hardlex (mineral) crystal scratches more easily than sapphire
- 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 | 28 mm | seikowatches.com · 23 Oct 2026 |
|---|---|---|
| Thickness | 11.2 mm | seikowatches.com · 23 Oct 2026 |
| Lug-to-lug | 33.1 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 | 100 m | seikowatches.com · 23 Oct 2026 |
| Magnetic resistance | 4,800 A/m | seikowatches.com · 23 Oct 2026 |
| Weight | 69 g | seikowatches.com · 23 Oct 2026 |
Dial
| Luminous material | LumiBrite | seikowatches.com · 23 Oct 2026 |
|---|
Movement
| Movement type | Automatic | seikowatches.com · 23 Oct 2026 |
|---|---|---|
| Calibre | 2R06 | 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
| Lug width | 14 mm | seikowatches.com · 23 Oct 2026 |
|---|
Other
| US list price (MSRP) | $315 | seikowatches.com · 23 Oct 2026 |
|---|---|---|
| Production status | In production | seikowatches.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.
Variants with the same specs
Same case, movement and bracelet or strap; typically a different dial or finish.
More in SKX series
Similar alternatives
Picked with Watch Finder's style tags and sizing.
Questions about the Seiko SRE003
How big is the Seiko SRE003?
The case is 28 mm wide, 11.2 mm thick and 33.1 mm from lug to lug.
What movement does the Seiko SRE003 use?
It uses the 2R06 calibre, a automatic movement with 40 h of power reserve.
Can I swim with the Seiko SRE003?
Yes. It is rated to 100 m.
How much is the Seiko SRE003?
The US list price was $315 on seikowatches.com when we checked on 23 Oct 2026. Prices change, so check before you buy.
Will the Seiko SRE003 fit my wrist?
By our sizing guide it sits best on wrists of about 11.1–12.8 cm (4.4–5.0 in). Use the fit checker on this page to test your own wrist.
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