Seiko Cal. 7139 - 320

This Spring Drive model from 1997 features a 39mm Hardlex-Coated Steel case. With its 21mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-00ded982a784]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1997

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