Seiko Cal. 5231 - 564

The 5231-564 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5231 caliber with 30j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-4ea91488e8f0]

Also known as: Sumo, Sea Horse

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

30j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1966

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