Description
The Seiko Prospex Alpinist SPB503 combines an expressive blue dial with a rugged stainless steel case and bracelet. It features the automatic Caliber 6R55 with manual winding and approximately 72 hours of power reserve.
- Caliber: 6R55 automatic, manual winding
- Power reserve: approximately 72 hours
- Case: 39.5 mm diameter, 12.7 mm thick, 46.4 mm lug-to-lug
- Stainless steel case with super hard coating
- Sapphire crystal with magnifier and inner anti-reflective coating
- Rotating compass bezel; screw-down crown
- 200 m (20 bar) water resistance
- See-through screw caseback; LumiBrite hands and indexes
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