Seiko Cal. 4577 - 920

The Seiko 4577-920 represents an important milestone in Seiko's 1965 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-bd4162c5b769]

Also known as: Shogun, Arnie

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1965

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