Seiko Cal. 5631 - 847

This Hand-Winding model from 1976 features a 36mm Stainless Steel case. It features a Black dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-ecee02916dac]

Also known as: Bullhead, Flighty

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1976

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