Seiko HDB010: caliber 4R36, 36.4 mm case, 100 m water resistance.
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Specifications
Specifications from Seiko, Seiko, last seen 2026-09-21.
Movement
- Caliber
- 4R36 All 4R36 watches →
- Movement
- Automatic
- Power reserve
- 41h
- Jewels
- 24
Case & crystal
- Case material
- Stainless steel (hard coating)
- Case diameter
- 36.4mm
- Case thickness
- 12.5mm
- Lug to lug
- 44.4mm
- Lug width
- 18mm
- Crystal
- Curved Hardlex
Resistance
- Water resistance
- 100 m
- Magnetic resistance
- 4,800 A/m
Catalogue
- Family
- HDB
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Variants Same watch, different market or bracelet
| Reference | Edition | Region | Band | Clasp | Weight |
|---|---|---|---|---|---|
| HDB010J | J | Japan | Nylon | — | 65g |
| HDB010K1 | K1 | International | Nylon | — | 64g |
