Seiko Cal. 6638 - 811

This Quartz model from 1978 features a 34mm Hardlex-Coated Steel case. It features a Champagne dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-e5484d3c1feb]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1978

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