Seiko Cal. 5237 - 831

The Seiko 5237-831 represents an important milestone in Seiko's 1970 lineup. Powered by the 5237 caliber with 24j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-771cd2a81318]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1970

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