Seiko Cal. 6642 - 552

The Seiko 6642-552 represents an important milestone in Seiko's 1969 lineup. With its 20mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-8069767e2459]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1969

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