Seiko Cal. 6642 - 538

This Spring Drive model from 1977 features a 43mm Two-Tone case. With its 21mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-9fb082ec14e1]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1977

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