Seiko Cal. 7159 - 831

The 7159-831 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7159 caliber with 33j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-e5b9aeb35f56]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1971

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