Seiko Cal. 6639 - 111

This Spring Drive model from 1979 features a 45mm Gold-Plated case. With its 19mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-683a74c61115]

Also known as: UFO, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1979

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