Seiko Cal. 4451 - 465

This Hand-Winding model from 1974 features a 34mm PVD Black case. Powered by the 4451 caliber with 21j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-ab5d3ecac06c]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1974

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