Seiko Cal. 4554 - 331

This Spring Drive model from 1966 features a 37mm Gold-Plated case. Powered by the 4554 caliber with 23j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-d309aabbdbb3]

Also known as: Sumo, Pogue

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1966

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