Seiko Cal. 7131 - 238

Seiko 7131-238

The 7131-238 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 42 hours power reserve. [seikata-wm-8276e7e8608f]

Also known as: Silverwave

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
34mm
Case Thickness
15.7mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
190m
Dial Color
Blue Sunburst
Jewels
18j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1994

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