Seiko Cal. 5641 - 977

This Spring Drive model from 1978 features a 37mm Gold-Plated case. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-f087de343340]

Also known as: Shogun, Crown

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1978

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