Seiko Cal. 6643 - 991

The Seiko 6643-991 represents an important milestone in Seiko's 1993 lineup. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-db8f6a1c53a8]

Also known as: Silverwave, Goldfeather

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1993

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