Seiko Cal. 6641 - 774

The Seiko 6641-774 represents an important milestone in Seiko's 1966 lineup. With its 20mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-6375ca834bd8]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1966

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