Seiko Cal. 7139 - 538

The 7139-538 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7139 caliber with 21j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-c855ff8ed5ed]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1988

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