Seiko Cal. 6690 - 428

This Spring Drive model from 1981 features a 45mm Two-Tone case. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-9a9e7cd9c7d8]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1981

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