Seiko Cal. 7139 - 316

The 7139-316 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7139 caliber with 25j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-f0876bedb598]

Also known as: Tuna, UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

14.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1995

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