Seiko Cal. 5689 - 631

This Automatic model from 1981 features a 43mm Stainless Steel case. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-9e26ba5af4f6]

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

14.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1981

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