Seiko Cal. 4577 - 916

The Seiko 4577-916 represents an important milestone in Seiko's 1969 lineup. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-2cb3b60ed23f]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1969

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