Seiko Cal. 4478 - 728

This Spring Drive model from 1970 features a 35mm Gold-Plated case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-0bfd78c62947]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1970

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