Seiko Cal. 4559 - 938

This Spring Drive model from 1983 features a 40mm Titanium case. Powered by the 4559 caliber with 34j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-b334b47ecf90]

Also known as: Tuna, Silverwave

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

34j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1983

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