Seiko Cal. 6641 - 696

This Spring Drive model from 1970 features a 37mm Stainless Steel case. With its 19mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-cf54fe99a816]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1970

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