Seiko Cal. 3891 - 203

This Spring Drive model from 1979 features a 36mm PVD Black case. With its 21mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-a7abe939eb42]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1979

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