Seiko Cal. 6696 - 640

This Spring Drive model from 1968 features a 45mm PVD Black case. With its 19mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-06ce1def8a1f]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1968

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