Seiko Cal. 4566 - 443

This Spring Drive model from 1985 features a 44mm Hardlex-Coated Steel case. Powered by the 4566 caliber with 21j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-666167680633]

Also known as: Helmet, Silverwave

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1985

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