Seiko Cal. 4556 - 990

The 4556-990 is a sought-after Spring Drive piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-812945c788cc]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1986

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