Seiko Cal. 4566 - 978

Seiko 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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