Seiko Cal. 6668 - 831

Released in 1977, the Cal. 6668 with design code 831 was part of Seiko's domestic market collection. It features a Green dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-1bf7aa17cbaf]

Also known as: Navigator, Crown

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1977

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