Seiko Cal. 6628 - 690

Released in 1987, the Cal. 6628 with design code 690 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-cf7cc30c3d63]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1987

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