Seiko Cal. 6663 - 731

The Seiko 6663-731 represents an important milestone in Seiko's 1980 lineup. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-a17a38982d1f]

Also known as: Goldfeather

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1980

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