Seiko Cal. 7139 - 558

The Seiko 7139-558 represents an important milestone in Seiko's 1977 lineup. Powered by the 7139 caliber with 28j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-1974920724cb]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1977

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