Seiko Cal. 7139 - 931

Seiko 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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