Seiko Cal. 5631 - 989

The Seiko 5631-989 represents an important milestone in Seiko's 1984 lineup. With its 21mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-fa73a7b10e28]

Also known as: Rally

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1984

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