Seiko Cal. 4566 - 978

This Hand-Winding model from 1991 features a 45mm Stainless Steel case. Powered by the 4566 caliber with 18j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-e4fa15d1a0cd]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1991

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