Seiko Cal. 4478 - 289

This Spring Drive model from 1975 features a 42mm Gold-Plated case. With its 22mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-1f0fc2b2404d]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1975

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