Seiko Cal. 7139 - 531

The Seiko 7139-531 represents an important milestone in Seiko's 1977 lineup. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-47bb2f38f144]

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Champagne

Jewels

33j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1977

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