Seiko Cal. 4576 - 991

The Seiko 4576-991 represents an important milestone in Seiko's 1973 lineup. Powered by the 4576 caliber with 29j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-b4560bbf316f]

Also known as: Goldfeather, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Cream

Jewels

29j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1973

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