Seiko Cal. 6639 - 158

The Seiko 6639-158 represents an important milestone in Seiko's 1989 lineup. With its 19mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-4cf5d9b899b1]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Cream

Jewels

33j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1989

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