Seiko Cal. 4421 - 307

The Seiko 4421-307 represents an important milestone in Seiko's 1976 lineup. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-aa2aee2199f5]

Also known as: Rally, World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1976

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