Seiko Cal. 6639 - 692

The Seiko 6639-692 represents an important milestone in Seiko's 1983 lineup. With its 18mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-78b621c86ebf]

Also known as: UFO, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1983

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