Seiko Cal. 6642 - 243

This Spring Drive model from 1968 features a 42mm Hardlex-Coated Steel case. With its 21mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-57ac36b35743]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1968

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