Seiko Cal. 3897 - 613

This Spring Drive model from 1970 features a 43mm PVD Black case. With its 18mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-4d10d403e57b]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1970

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