Seiko Cal. 6391 - 670

The Seiko 6391-670 represents an important milestone in Seiko's 1975 lineup. With its 18mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-d1fd09374eec]

Also known as: Samurai, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

24j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1975

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