Seiko Cal. 4573 - 640

The Seiko 4573-640 represents an important milestone in Seiko's 1979 lineup. It features a White dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-bee470a7081b]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

White

Jewels

24j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1979

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