Seiko Cal. 7131 - 338

Seiko 7131-338

The 7131-338 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7131 caliber with 18j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-5a8ac784e9b4]

Also known as: Tuna, Pogue

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
10.1mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
200m
Dial Color
Burgundy
Jewels
18j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1975

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