Seiko Cal. 5689 - 401

The Seiko 5689-401 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-af9608ea413f]

Also known as: Bullhead, Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1977

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