Seiko Cal. 5678 - 739

The Seiko 5678-739 represents an important milestone in Seiko's 1974 lineup. Powered by the 5678 caliber with 22j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-892ee01ee05f]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1974

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