Seiko Cal. 4421 - 457

This Hand-Winding model from 1972 features a 38mm PVD Black case. Powered by the 4421 caliber with 35j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-ae42d09da3db]

Also known as: Samurai, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

White

Jewels

35j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1972

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