Seiko Cal. 6337 - 691

The Seiko 6337-691 represents an important milestone in Seiko's 1977 lineup. The Fixed bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-13178945e339]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1977

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