Seiko Cal. 7137 - 256

Seiko 7137-256

The 7137-256 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-06d9759e72a8]

Also known as: Samurai, Helmet

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
13.3mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Blue Sunburst
Jewels
35j
Frequency
21,600 bph
Power Reserve
66 hours
Year
1969

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