Seiko Cal. 6690 - 634

The Seiko 6690-634 represents an important milestone in Seiko's 1970 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-7a1f96f1077e]

Also known as: Rally, Silverwave

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1970

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