Seiko Cal. 4521 - 559

The 4521-559 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-6ac80ed24ae1]

Also known as: Goldfeather, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1990

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