Seiko Cal. 3879 - 720

The Seiko 3879-720 represents an important milestone in Seiko's 1968 lineup. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-8f9c9ebc6a61]

Also known as: Tuna, Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1968

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