Seiko Cal. 6139 - 988

The Seiko 6139-988 represents an important milestone in Seiko's 1977 lineup. With its 20mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-df00a2984fce]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1977

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