Seiko Cal. 4420 - 998

The Seiko 4420-998 represents an important milestone in Seiko's 1978 lineup. It features a Silver dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-7e4bfed231ad]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1978

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