Seiko Cal. 4581 - 634

The Seiko 4581-634 represents an important milestone in Seiko's 1977 lineup. Powered by the 4581 caliber with 24j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-f742f60d0b26]

Also known as: Shogun, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

24j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1977

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