Seiko Cal. 0766 - 641

The Seiko 0766-641 represents an important milestone in Seiko's 1977 lineup. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-1ea0bf923bf7]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1977

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