Seiko Cal. 6630 - 422

The Seiko 6630-422 represents an important milestone in Seiko's 1975 lineup. The Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-e499f422f4fd]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1975

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