Seiko Cal. 5660 - 549

This Spring Drive model from 1969 features a 42mm PVD Black case. With its 18mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-a390fbfebac7]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1969

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