Seiko Cal. 6139 - 813

The Seiko 6139-813 represents an important milestone in Seiko's 1980 lineup. With its 21mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-4e97504eec8b]

Also known as: Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

28j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1980

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