Seiko Cal. 3870 - 816

This Spring Drive model from 1979 features a 42mm Two-Tone case. With its 19mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-c7fb8e3461bb]

Also known as: Goldfeather, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

30j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1979

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