Seiko Cal. 6630 - 633

The Seiko 6630-633 represents an important milestone in Seiko's 1975 lineup. The Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-2e5fbdeb26d7]

Also known as: Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1975

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