Seiko Cal. 7139 - 556

The 7139-556 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7139 caliber with 21j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-91b3f3fe2dd8]

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1970

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