Seiko Cal. 3879 - 256

The Seiko 3879-256 represents an important milestone in Seiko's 1971 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-1df18a4a0ea4]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

White

Jewels

29j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1971

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