Seiko Cal. 5231 - 239

The 5231-239 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5231 caliber with 31j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-cb5c9572b583]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1976

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