Seiko Cal. 5640 - 980

This Quartz model from 1969 features a 36mm Gold-Plated case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-48a01d361f3f]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1969

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