Seiko Cal. 6691 - 976

The Seiko 6691-976 represents an important milestone in Seiko's 1980 lineup. With its 20mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-ef88db091329]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1980

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