Seiko Cal. 4581 - 474

Seiko 4581-474

The Seiko 4581-474 represents an important milestone in Seiko's 1982 lineup. Powered by the 4581 caliber with 21j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-4ca0fdb74ee6]

Also known as: Navigator, Arnie

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
15.1mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Blue Sunburst
Jewels
21j
Frequency
36,000 bph
Power Reserve
71 hours
Year
1982

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