Seiko Cal. 7139 - 180

The Seiko 7139-180 represents an important milestone in Seiko's 1988 lineup. Powered by the 7139 caliber with 34j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-2af53899eeff]

Also known as: Helmet, Navigator

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1988

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