Seiko Cal. 6657 - 943

This Spring Drive model from 1975 features a 46mm PVD Black case. With its 18mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-229b7a083bb5]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1975

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