Seiko Cal. 4421 - 447

The Seiko 4421-447 represents an important milestone in Seiko's 1994 lineup. Powered by the 4421 caliber with 21j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-bc4fc60e425d]

Also known as: Tuna, Crown

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1994

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