Seiko HDB013: caliber 4R36, 38 mm case, 100 m water resistance.
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Specifications
Specifications from 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 caseback: Stainless steel and glass
- Case diameter
- 38mm
- Case thickness
- 12.3mm
- Lug to lug
- 44.2mm
- Crystal
- Curved Hardlex
Resistance
- Water resistance
- 100 m
- Magnetic resistance
- Antimagnetic
Catalogue
- Family
- HDB
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Variants Same watch, different market or bracelet
| Reference | Edition | Region | Band | Clasp | Weight |
|---|---|---|---|---|---|
| HDB013J | J | Japan | Silicone strap | — | 77g |
