Seiko Cal. 3878 - 637

The Seiko 3878-637 represents an important milestone in Seiko's 1983 lineup. With its 19mm lug width and 14.0mm profile, it sits comfortably on most wrists. [seikata-wm-3261ed307bcd]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1983

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