Seiko Cal. 6630 - 390

The Seiko 6630-390 represents an important milestone in Seiko's 1968 lineup. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-e034da99e9a0]

Also known as: Goldfeather

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1968

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