Seiko Cal. 3879 - 631

The Seiko 3879-631 represents an important milestone in Seiko's 1983 lineup. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-771ee2bff4f2]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1983

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