Seiko Cal. 6639 - 756

This Spring Drive model from 1982 features a 41mm Two-Tone case. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-998ee21dc2e8]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1982

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