Seiko Cal. 4558 - 614

This Spring Drive model from 1965 features a 44mm Hardlex-Coated Steel case. Powered by the 4558 caliber with 21j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-709bfe8a494d]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1965

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