Seiko Cal. 6630 - 623

The Seiko 6630-623 represents an important milestone in Seiko's 1968 lineup. Powered by the 6630 caliber with 26j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-7fc7c267eea2]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

White

Jewels

26j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1968

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