Seiko Cal. 6391 - 407

The Seiko 6391-407 represents an important milestone in Seiko's 1974 lineup. With its 19mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-085cf3b26008]

Also known as: Silverwave, World Timer

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1974

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