Seiko Cal. 6642 - 686

The Seiko 6642-686 represents an important milestone in Seiko's 1967 lineup. With its 21mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-b05a5f6826c2]

Also known as: Crown, Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1967

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