Seiko Cal. 7139 - 278

The 7139-278 is a sought-after Solar piece from Seiko's golden era. Powered by the 7139 caliber with 21j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-be0bfecf205f]

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1974

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