Seiko Cal. 6641 - 704

This Spring Drive model from 1980 features a 36mm Gold-Plated case. With its 22mm lug width and 10.8mm profile, it sits comfortably on most wrists. [seikata-wm-413807cbf0e2]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1980

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