Seiko Cal. 6631 - 179

The Seiko 6631-179 represents an important milestone in Seiko's 1989 lineup. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-3fc84a1fa975]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1989

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