Seiko Cal. 3879 - 444

The Seiko 3879-444 represents an important milestone in Seiko's 1975 lineup. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-35febc2f50e3]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1975

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