Seiko Cal. 5640 - 807

This Spring Drive model from 1966 features a 35mm Gold-Plated case. It features a Champagne dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-e1bac83f55ad]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1966

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