Seiko HCB004: caliber 4R34, 40.5 mm case, 50 m water resistance.
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Specifications
Specifications from Seiko, Seiko, last seen 2026-09-21.
Movement
- Caliber
- 4R34 All 4R34 watches →
- Movement
- Automatic
- Power reserve
- 41h
- Jewels
- 24
Case & crystal
- Case material
- Stainless steel
- Case diameter
- 40.5mm
- Case thickness
- 12.8mm
- Lug to lug
- 47.5mm
- Lug width
- 20mm
- Crystal
- Box-shaped Hardlex
Resistance
- Water resistance
- 50 m
- Magnetic resistance
- 4,800 A/m
Catalogue
- Family
- HCB
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Variants Same watch, different market or bracelet
| Reference | Edition | Region | Band | Clasp | Weight |
|---|---|---|---|---|---|
| HCB004J | J | Japan | — | Butterfly clasp with push button release | 137g |
| HCB004J1 | J1 | Japan | — | Three-fold clasp with push button release | — |
