Seiko Cal. 6642 - 111

This Spring Drive model from 1966 features a 35mm Hardlex-Coated Steel case. With its 22mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-59eaa4981e50]

Also known as: Helmet, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1966

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