Seiko Cal. 4423 - 379

The Seiko 4423-379 represents an important milestone in Seiko's 1972 lineup. It features a Green dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-8b0faadd8565]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1972

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