Seiko Cal. 6688 - 660

Released in 1978, the Cal. 6688 with design code 660 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-95fd3dbb25d8]

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

14.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1978

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