Seiko Cal. 6631 - 653

The Seiko 6631-653 represents an important milestone in Seiko's 1982 lineup. With its 19mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-3aef80d79d9a]

Also known as: Samurai, Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

26j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1982

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