Seiko SPB545: caliber 6R55, 40 mm case, 300 m diver's water resistance.
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Specifications
Specifications from Seiko, last seen 2026-09-21.
Movement
- Caliber
- 6R55 All 6R55 watches →
- Movement
- Automatic
- Power reserve
- 72h
- Jewels
- 24
Case & crystal
- Case material
- Stainless steel
- Case diameter
- 40mm
- Case thickness
- 13mm
- Lug to lug
- 46.4mm
- Lug width
- 20mm
- Crystal
- Curved sapphire crystal
Resistance
- Water resistance
- 300 m diver's
- Magnetic resistance
- 4,800 A/m
Catalogue
- Family
- SPB
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Variants Same watch, different market or bracelet
| Reference | Edition | Region | Band | Clasp | Weight |
|---|---|---|---|---|---|
| SPB545J1 | J1 | Japan | — | Three-fold clasp with secure lock & push button release, solid & slide adjuster | — |