Seiko Cal. 4421 - 497

The Seiko 4421-497 represents an important milestone in Seiko's 1972 lineup. Powered by the 4421 caliber with 25j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-21e70e85d0f3]

Also known as: Pogue, Bullhead

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1972

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