Seiko Cal. 7139 - 587

The Seiko 7139-587 represents an important milestone in Seiko's 1979 lineup. Powered by the 7139 caliber with 24j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-095e8df9b3f7]

Also known as: Monster, UFO

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

White

Jewels

24j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1979

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