Seiko Cal. 4420 - 104

The Seiko 4420-104 represents an important milestone in Seiko's 1977 lineup. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-77a4c2aa81d5]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1977

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