Seiko Cal. 5691 - 312

The Seiko 5691-312 represents an important milestone in Seiko's 1982 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-b747822654e4]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Burgundy

Jewels

24j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1982

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