Seiko Cal. 6636 - 998

The Seiko 6636-998 represents an important milestone in Seiko's 1975 lineup. With its 18mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-62af7184ead0]

Also known as: Samurai, Crown

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1975

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