Seiko Cal. 4420 - 188

The Seiko 4420-188 represents an important milestone in Seiko's 1966 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-a6118dd5052d]

Also known as: Shogun, Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1966

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