Seiko Cal. 4558 - 646

This Spring Drive model from 1979 features a 37mm Hardlex-Coated Steel case. Powered by the 4558 caliber with 35j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-0ea1ae0b8c03]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1979

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