Seiko Cal. 4420 - 147

The Seiko 4420-147 represents an important milestone in Seiko's 1989 lineup. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-e232bc51f072]

Also known as: Bullhead, World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1989

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