Seiko Cal. 7136 - 731

Seiko 7136-731

The 7136-731 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7136 caliber with 29j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-a49e95ee5b59]

Also known as: Turtle, Samurai

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
10.2mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
190m
Dial Color
Champagne
Jewels
29j
Frequency
21,600 bph
Power Reserve
50 hours
Year
1974

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