Seiko Cal. 4577 - 920

The Seiko 4577-920 represents an important milestone in Seiko's 1970 lineup. Powered by the 4577 caliber with 30j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-5c358fb145ba]

Also known as: Pogue

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

White

Jewels

30j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1970

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