Seiko Cal. 6638 - 554

The Seiko 6638-554 represents an important milestone in Seiko's 1969 lineup. With its 22mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-b863588bd2ad]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

34mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1969

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