Seiko Cal. 6391 - 490

The Seiko 6391-490 represents an important milestone in Seiko's 1972 lineup. Powered by the 6391 caliber with 21j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-20bcb1717aa5]

Also known as: Rally

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1972

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