Seiko Cal. 4577 - 642

The Seiko 4577-642 represents an important milestone in Seiko's 1978 lineup. With its 18mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-5c084a94b556]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1978

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