Seiko Cal. 5631 - 982

The Seiko 5631-982 represents an important milestone in Seiko's 1971 lineup. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-b55d6ca5e8dd]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Champagne

Jewels

23j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1971

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