Seiko Cal. 5631 - 835

The Seiko 5631-835 represents an important milestone in Seiko's 1982 lineup. With its 18mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-7f56f4500a29]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1982

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