Seiko Cal. 4577 - 461

The Seiko 4577-461 represents an important milestone in Seiko's 1973 lineup. With its 19mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-b4fc553eaf18]

Also known as: Tuna, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1973

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