Seiko Cal. 7139 - 331

Seiko 7139-331

The 7139-331 is a sought-after Solar piece from Seiko's golden era. Powered by the 7139 caliber with 22j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-67181a4db5d3]

Also known as: Golden Tuna

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
41mm
Case Thickness
10.7mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
160m
Dial Color
Green
Jewels
22j
Frequency
28,800 bph
Power Reserve
43 hours
Year
1991

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