Seiko Cal. 5631 - 268

The 5631-268 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5631 caliber with 32j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-810bea4210dc]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1970

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