Seiko Cal. 3872 - 186

The Seiko 3872-186 represents an important milestone in Seiko's 1975 lineup. With its 20mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-1ffa2d5f0cab]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1975

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