Seiko SSA377: caliber 4R39, 41.8 mm case, Splash resistant water resistance.
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Specifications
Specifications from Seiko, Creation Watches, last seen 2026-09-23.
Movement
- Caliber
- 4R39 All 4R39 watches →
- Movement
- Automatic
- Power reserve
- 41h
- Jewels
- 24
Case & crystal
- Case material
- Stainless steel
- Case diameter
- 41.8mm
- Case thickness
- 12.5mm
- Lug width
- 20mm
- Crystal
- Dual-curved sapphire crystal
Resistance
- Water resistance
- Splash resistant
Catalogue
- Family
- SSA
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Variants Same watch, different market or bracelet
| Reference | Edition | Region | Band | Clasp | Weight |
|---|---|---|---|---|---|
| SSA377J1 | J1 | Japan | Stainless steel | Three-fold clasp with push button release | 132g |