Seiko Cal. 4421 - 744

The Seiko 4421-744 represents an important milestone in Seiko's 1992 lineup. Powered by the 4421 caliber with 36j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-d876f076d75d]

Also known as: Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1992

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