Seiko Cal. 6641 - 331

The Seiko 6641-331 represents an important milestone in Seiko's 1988 lineup. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-a2fc1fea3152]

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1988

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