Seiko Cal. 7139 - 931

The 7139-931 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7139 caliber with 23j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-7d768b652b9a]

Also known as: Pogue, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1997

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