Seiko Cal. 3870 - 320

This Spring Drive model from 1979 features a 38mm Gold-Plated case. With its 21mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-47828f491580]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1979

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