Seiko Cal. 3871 - 778

This Hand-Winding model from 1979 features a 36mm Stainless Steel case. With its 21mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-e83351fb239e]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

22j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1979

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