Seiko Cal. 7139 - 587

Seiko 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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