Seiko SPB439: caliber 6R54, 42 mm case, 200 m diver's water resistance.
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Specifications
Specifications from Seiko, last seen 2026-09-21.
Movement
- Caliber
- 6R54 All 6R54 watches →
- Movement
- Automatic
- Power reserve
- 72h
- Jewels
- 24
Case & crystal
- Case material
- Stainless steel (Bezel: Stainless steel with ceramic display)
- Case diameter
- 42mm
- Case thickness
- 12.9mm
- Lug to lug
- 48.6mm
- Lug width
- 20mm
- Crystal
- Sapphire crystal
Resistance
- Water resistance
- 200 m diver's
- Magnetic resistance
- 4,800 A/m
Catalogue
- Family
- SPB