Seiko Cal. 5678 - 839

The Seiko 5678-839 represents an important milestone in Seiko's 1976 lineup. Powered by the 5678 caliber with 17j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-041bfe1ba09d]

Also known as: Pogue, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1976

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