Seiko Cal. 5678 - 391

This Solar model from 1966 features a 42mm Gold-Plated case. It features a Navy dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-ee23c0a21aca]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1966

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