Seiko - Prospex Alpinist - SPB121J1 - Watch Specs & Virtual Try-On
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Watch summary
The Seiko Prospex Alpinist SPB121J1 is a robust field watch for everyday and outdoor wear. A 39.5mm steel case, 46.4mm lug-to-lug, 13.2mm thickness, 6R35 automatic, and internal compass bezel give moderate presence on a strap. Best for wrists around 14–18cm; short lugs aid comfort—use the virtual try-on to confirm your fit.
- Case Diameter
- 39.5 mm
- Movement
- Seiko 6R35
- Power Reserve
- Approximately 70 hours
- Thickness
- 13.2 mm
- Lug-to-Lug
- 46.4 mm
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