Seiko Cal. 6657 - 822

This Spring Drive model from 1978 features a 40mm Gold-Plated case. With its 22mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-66d9ce20352c]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1978

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