Seiko Cal. 3870 - 989

This Spring Drive model from 1975 features a 42mm PVD Black case. With its 19mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-c4d9d2205415]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1975

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