Grand Seiko SLGA001
Ref. SLGA001 · In production
- Case46.9 mm
- Thick16 mm
- Lug-to-lug50.8 mm
- MovementSpring Drive
- CrystalSapphire
Overview
The Grand Seiko SLGA001 is an everyday watch from the Sport collection. It has a 46.9 mm high-intensity titanium case, 16 mm thick, 50.8 mm from lug to lug. Inside is a spring drive movement (calibre 9RA5) with 120 h of power reserve. You also get a sapphire crystal and a strap.
Who it suits
- Wrists of roughly 18.9–20.8 cm (7.4–8.2 in), by our Watch Finder sizing guide
Strengths
- Sapphire crystal resists scratches
- Screw-down crown helps keep water out
- 120 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)
Trade-offs
- Thick at 16 mm: harder to slide under a cuff
- Long 50.8 mm lug-to-lug can overhang smaller wrists
- Limited edition: may be hard to find new
Written by Watch.co from the published specs below. These are not owner reviews.
Full specifications
Case
| Case diameter | 46.9 mm | grand-seiko.com · 23 Oct 2026 |
|---|---|---|
| Thickness | 16 mm | grand-seiko.com · 23 Oct 2026 |
| Lug-to-lug | 50.8 mm | grand-seiko.com · 23 Oct 2026 |
| Case material | High-intensity titanium | grand-seiko.com · 23 Oct 2026 |
| Crystal | Sapphire | grand-seiko.com · 23 Oct 2026 |
| Caseback | Screw | grand-seiko.com · 23 Oct 2026 |
| Bezel | Rotating | 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 | 164 g | grand-seiko.com · 23 Oct 2026 |
Dial
| Luminous material | LumiBrite | grand-seiko.com · 23 Oct 2026 |
|---|---|---|
| Date | 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 | 9RA5 | grand-seiko.com · 23 Oct 2026 |
| Made in-house | Yes | grand-seiko.com · 23 Oct 2026 |
| Power reserve | 120 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 | Strap | grand-seiko.com · 23 Oct 2026 |
|---|---|---|
| Lug width | 23 mm | grand-seiko.com · 23 Oct 2026 |
Other
| US list price (MSRP) | $11,100 | grand-seiko.com · 23 Oct 2026 |
|---|---|---|
| Production status | In production | grand-seiko.com · 23 Oct 2026 |
| Limited edition | Yes | grand-seiko.com · 23 Oct 2026 |
| Style (our classification) | Everyday | 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.
More in Sport
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Picked with Watch Finder's style tags and sizing.
Questions about the Grand Seiko SLGA001
How big is the Grand Seiko SLGA001?
The case is 46.9 mm wide, 16 mm thick and 50.8 mm from lug to lug.
What movement does the Grand Seiko SLGA001 use?
It uses the 9RA5 calibre, a spring drive movement with 120 h of power reserve.
Does the Grand Seiko SLGA001 have a date?
Yes, it shows the date.
How much is the Grand Seiko SLGA001?
The US list price was $11,100 on grand-seiko.com when we checked on 23 Oct 2026. Prices change, so check before you buy.
Will the Grand Seiko SLGA001 fit my wrist?
By our sizing guide it sits best on wrists of about 18.9–20.8 cm (7.4–8.2 in). Use the fit checker on this page to test your own wrist.
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