Seiko Cal. 5688 - 139

The Seiko 5688-139 represents an important milestone in Seiko's 1988 lineup. With its 19mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-2622604ef124]

Also known as: Helmet, World Timer

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1988

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