Seiko Cal. 4451 - 523

The Seiko 4451-523 represents an important milestone in Seiko's 1973 lineup. Powered by the 4451 caliber with 24j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-c8ae866178c8]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1973

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