Seiko Cal. 4420 - 618

The 4420-618 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-25db2bf97093]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1990

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