Seiko Cal. 4577 - 180

This Hand-Winding model from 1975 features a 44mm Hardlex-Coated Steel case. With its 21mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-c60b52093a40]

Also known as: Sumo, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1975

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