Seiko Cal. 6391 - 308

The Seiko 6391-308 represents an important milestone in Seiko's 1970 lineup. With its 20mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-2a8e1de8950d]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1970

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