Seiko Cal. 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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