Seiko Cal. 6643 - 231

The Seiko 6643-231 represents an important milestone in Seiko's 1995 lineup. The Fixed bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-876dbd8212c5]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Champagne

Jewels

33j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1995

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