Seiko Cal. 4477 - 578

This Spring Drive model from 1972 features a 42mm PVD Black case. With its 19mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-29a87d5cb0cc]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Silver

Jewels

26j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1972

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