Seiko Cal. 6390 - 726

The Seiko 6390-726 represents an important milestone in Seiko's 1974 lineup. Powered by the 6390 caliber with 20j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-69041c900eb8]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1974

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