Seiko Cal. 5639 - 223

This Spring Drive model from 1985 features a 35mm Gold-Plated case. Powered by the 5639 caliber with 28j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-05e817aa7d1f]

Also known as: Rally, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1985

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