Seiko Cal. 4490 - 520

The 4490-520 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4490 caliber with 17j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-acd3e2e93f5d]

Also known as: World Timer, Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1983

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