Seiko Cal. 5657 - 999

This Spring Drive model from 1967 features a 39mm PVD Black case. With its 18mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-0ebad00330fc]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1967

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