Seiko Cal. 5231 - 805

The 5231-805 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5231 caliber with 25j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-6e947b23afdf]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1972

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