Seiko Cal. 3873 - 361

This Spring Drive model from 1976 features a 45mm Stainless Steel case. With its 19mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-e1be84193d0f]

Also known as: Sumo, Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1976

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