Seiko Cal. 4577 - 478

This Spring Drive model from 1972 features a 46mm PVD Black case. With its 20mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-dd88145c9b8d]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1972

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