Seiko Cal. 4520 - 746

The 4520-746 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4520 caliber with 28j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-21eee3707b82]

Also known as: Goldfeather, World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1989

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