Seiko Cal. 6623 - 231

The Seiko 6623-231 represents an important milestone in Seiko's 1974 lineup. Powered by the 6623 caliber with 27j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-69f9937efabb]

Also known as: UFO, World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1974

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